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Heroic flying isn't enough to overcome neglectful maintenance in the tragic accident of Alaska Airlines Flight 261.

Heroic flying isn't enough to overcome neglectful maintenance in the tragic accident of Alaska Airlines Flight 261.

The case of Helios Airways 737, in which a passenger flight circling Athens fails to respond to air-traffic controllers.

The case of Helios Airways 737, in which a passenger flight circling Athens fails to respond to air-traffic controllers.

The 2003 crash of Air Midwest Flight 5481 after takeoff from Charlotte-Douglas International Airport in North Carolina.

The 2003 crash of Air Midwest Flight 5481 after takeoff from Charlotte-Douglas International Airport in North Carolina.

An Airbus A321 carrying Russian tourists back from Egypt in 2015 suddenly disappears from radar minutes after takeoff. Air Force jets locate the charred wreckage in the Sinai Desert. There are no survivors. How did this modern airplane just fall from the sky? Follow Egyptian investigators and their Russian counterparts as they work through political tensions and wild rumors to discover the truth behind the crash of Metrojet Flight 9268.

An Airbus A321 carrying Russian tourists back from Egypt in 2015 suddenly disappears from radar minutes after takeoff. Air Force jets locate the charred wreckage in the Sinai Desert. There are no survivors. How did this modern airplane just fall from the sky? Follow Egyptian investigators and their Russian counterparts as they work through political tensions and wild rumors to discover the truth behind the crash of Metrojet Flight 9268.

FedEx employees fend off an attack by a coworker.

FedEx employees fend off an attack by a coworker.

A mid-flight bombing aboard Philippine Airlines Flight 434 forces its pilots to attempt a daring landing at Naha Airport in Okinawa, Japan.

A mid-flight bombing aboard Philippine Airlines Flight 434 forces its pilots to attempt a daring landing at Naha Airport in Okinawa, Japan.

The story of Ethiopian Airlines Flight 961, which was hijacked while on a routine trip to the Ivory Coast. The hijackers demanded to be taken to Australia, but there was one problem: the plane didn't have enough fuel to make the trip.

The story of Ethiopian Airlines Flight 961, which was hijacked while on a routine trip to the Ivory Coast. The hijackers demanded to be taken to Australia, but there was one problem: the plane didn't have enough fuel to make the trip.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

A flyover tour of New Jersey.

A flyover tour of New Jersey.

A flyover tour of Northern California, featuring natural and man-made wonders.

A flyover tour of Northern California, featuring natural and man-made wonders.

An aerial tour of New England spotlights its beauty and history.

An aerial tour of New England spotlights its beauty and history.

A flyover tour of America's man-made marvels, including the Statue of Liberty and Seattle's Space Needle.

A flyover tour of America's man-made marvels, including the Statue of Liberty and Seattle's Space Needle.

A scenic cross-country flight, from the mountains to the prairies, and from sea to shining sea.

A scenic cross-country flight, from the mountains to the prairies, and from sea to shining sea.

An aerial tour of America's waterways, wetlands, dams and canals.

An aerial tour of America's waterways, wetlands, dams and canals.

The iconic Canadian travels between Vancouver and Toronto; passengers travel in vintage streamliner cars built in the 1950s.

The iconic Canadian travels between Vancouver and Toronto; passengers travel in vintage streamliner cars built in the 1950s.

Spotlighting different trains from around the world. In the series premiere, a look at the Glacier Express which follows a mountainous route through the Swiss Alps.

Spotlighting different trains from around the world. In the series premiere, a look at the Glacier Express which follows a mountainous route through the Swiss Alps.

The cruise ship travels to Greenland where passengers get a glimpse of the wildlife and icebergs found in the area.

The cruise ship travels to Greenland where passengers get a glimpse of the wildlife and icebergs found in the area.

Season 6 opens with a look at the cruise ship Crystal Serenity.

Season 6 opens with a look at the cruise ship Crystal Serenity.

An ocean liner sails through a hurricane.

An ocean liner sails through a hurricane.

Regal Princess is the largest ship Princess Cruises has ever built; sailing the Baltic Sea, the crew faces narrow channels, shifting waters, shallow harbours, and buses and trains that transport guests but play havoc with the ship's schedule.

Regal Princess is the largest ship Princess Cruises has ever built; sailing the Baltic Sea, the crew faces narrow channels, shifting waters, shallow harbours, and buses and trains that transport guests but play havoc with the ship's schedule.

Regal Princess is the largest ship Princess Cruises has ever built; sailing the Baltic Sea, the crew faces narrow channels, shifting waters, shallow harbours, and buses and trains that transport guests but play havoc with the ship's schedule.

Regal Princess is the largest ship Princess Cruises has ever built; sailing the Baltic Sea, the crew faces narrow channels, shifting waters, shallow harbours, and buses and trains that transport guests but play havoc with the ship's schedule.

Koningsdam is Holland America's newest, largest and most technologically advanced ship; sailing the narrow Norwegian fjords on a mega-ship presents numerous challenges for the bridge team.

Koningsdam is Holland America's newest, largest and most technologically advanced ship; sailing the narrow Norwegian fjords on a mega-ship presents numerous challenges for the bridge team.

A luxury cruise ship navigates narrow rivers in Southeast Asia.

A luxury cruise ship navigates narrow rivers in Southeast Asia.

Sky Princess is loaded with big tech to get the job done, whether it's sailing into tight ports; battling strong winds and currents; feeding more than 3500 guests; or helping passengers locate their friends on the ship.

Sky Princess is loaded with big tech to get the job done, whether it's sailing into tight ports; battling strong winds and currents; feeding more than 3500 guests; or helping passengers locate their friends on the ship.

Spotlighting Europa 2, a spacious ship.

Spotlighting Europa 2, a spacious ship.

Examining two mid-air crashes involving DC-10s in the 1970s.

Examining two mid-air crashes involving DC-10s in the 1970s.

AeroPeru flight 603 crashed en route to Santiago from Lima, killing seventy people on board. Investigations reveal that the disaster was caused by simple negligence on the part of the aircraft maintenance team that caused the air data computer to not show the plane's actual altitude.

AeroPeru flight 603 crashed en route to Santiago from Lima, killing seventy people on board. Investigations reveal that the disaster was caused by simple negligence on the part of the aircraft maintenance team that caused the air data computer to not show the plane's actual altitude.

Following three deadly crashes, investigators uncover dangerous mathematical flaws in the very operations systems designed to prevent aircraft from flying into mountains.

Following three deadly crashes, investigators uncover dangerous mathematical flaws in the very operations systems designed to prevent aircraft from flying into mountains.

A 1991 runway collision between two planes at L.A. International Airport is recalled.

A 1991 runway collision between two planes at L.A. International Airport is recalled.

See what happens when an airbus A330 loses power to both its engines over the South China Sea.

See what happens when an airbus A330 loses power to both its engines over the South China Sea.

The chances of a catastrophic event happening after a plane parks are nearly nonexistent, which is why the incident aboard China Airlines Flight 120 in August 2007 was so baffling to investigators. The plane's engines were switched off. The passengers were lining up to debark. Then within seconds, the aircraft was engulfed in flames. What caused the sudden inferno that sent panicked passengers scrambling for their lives?

The chances of a catastrophic event happening after a plane parks are nearly nonexistent, which is why the incident aboard China Airlines Flight 120 in August 2007 was so baffling to investigators. The plane's engines were switched off. The passengers were lining up to debark. Then within seconds, the aircraft was engulfed in flames. What caused the sudden inferno that sent panicked passengers scrambling for their lives?

The 1983 Air Canada Flight 143 incident, in which a Boeing 767 ran out of fuel in mid-flight, is recalled via eyewitness accounts, official records and dramatic re-creations.

The 1983 Air Canada Flight 143 incident, in which a Boeing 767 ran out of fuel in mid-flight, is recalled via eyewitness accounts, official records and dramatic re-creations.

Visit a futuristic research station in the world's most extreme climate; a concrete arch which appears to levitate; and the world's first rotating boat lift.

Visit a futuristic research station in the world's most extreme climate; a concrete arch which appears to levitate; and the world's first rotating boat lift.

A visit to the Vancouver House, Norway's Under restaurant, and the Seattle Central Library to discover how these visionary buildings were created.

A visit to the Vancouver House, Norway's Under restaurant, and the Seattle Central Library to discover how these visionary buildings were created.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation. They work to find and cap some of the estimated two million leaking, potentially deadly abandoned oil and gas wells scattered across the country.

Mike Davidson goes on a cross-country road trip to help the Well Done Foundation. They work to find and cap some of the estimated two million leaking, potentially deadly abandoned oil and gas wells scattered across the country.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky.

Mike Davidson goes to the biggest automated package sorting facility in the world - UPS Worldport in Louisville, Kentucky.

Exploring Lima and its amazing scenery and engineering.

Exploring Lima and its amazing scenery and engineering.

Maharaja's Express is a luxury train and often referred to as Indian Railways' crown jewel. Passengers pay between $2,900 to $26,000 USD per ticket for the privilege of being treated like royalty.

Maharaja's Express is a luxury train and often referred to as Indian Railways' crown jewel. Passengers pay between $2,900 to $26,000 USD per ticket for the privilege of being treated like royalty.

Take a ride on two magnificent journeys with New Zealand's KiwiRail: the TranzAlpine, a five-hour journey across 223 kilometers; and Northern Explorer, an 11-hour trip through five unique regions of the North Island.

Take a ride on two magnificent journeys with New Zealand's KiwiRail: the TranzAlpine, a five-hour journey across 223 kilometers; and Northern Explorer, an 11-hour trip through five unique regions of the North Island.

A three-day expedition through tropical jungles, volcanoes, and up the Devil's Nose.

A three-day expedition through tropical jungles, volcanoes, and up the Devil's Nose.

Rocky Mountaineer journeys across Western Canada and over the Rocky Mountains as the train rolls from Vancouver to Banff and then from Jasper back down to Vancouver.

Rocky Mountaineer journeys across Western Canada and over the Rocky Mountains as the train rolls from Vancouver to Banff and then from Jasper back down to Vancouver.

Featuring South Africa's most luxurious train; Rovos Rail. A journey from Pretoria to Cape Town in classic carriages pulled by a series of steam, diesel and electric locomotives.

Featuring South Africa's most luxurious train; Rovos Rail. A journey from Pretoria to Cape Town in classic carriages pulled by a series of steam, diesel and electric locomotives.

The world's fastest, strongest, and most remarkable trains.

The world's fastest, strongest, and most remarkable trains.

Featuring one of the most expensive train rides in the world.

Featuring one of the most expensive train rides in the world.

An airliner flies into a cyclone-ravaged island to dodge thunderstorms; aerial firefighters cross the country; chainsaw operators hang under helicopters.

An airliner flies into a cyclone-ravaged island to dodge thunderstorms; aerial firefighters cross the country; chainsaw operators hang under helicopters.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into darkness.

A K9 anti-poaching squad flies into action, a heavy-lift helicopter flies emergency supply missions across a storm-ravaged island and an airliner races to reach its destination before a power outage plunges the airport into darkness.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

An engine fault threatens to ground an airliner, scientists and pilots team up to protect cattle from lion attack, damaged runway lights plunge a busy airport into darkness, and South Africa's top aerial display team wows crowds.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

A medical helicopter flies over rush hour traffic to collect a patient, the search is on for a lost elephant, engineers race to fix a chopper, and airline pilots fly to one of the world's most dangerous runways.

As Denver air traffic controllers struggle to keep departures on schedule amid heavy snow in 1987, a DC-9 is delayed on the tarmac. When the crew is finally cleared for takeoff, the plane gets only 20 feet off the ground before banking sharply and slamming back down, killing 28 of the 82 people on board. Follow investigators as they uncover why Continental Airlines Flight 1713 crashed in bad weather while others safely took off.

As Denver air traffic controllers struggle to keep departures on schedule amid heavy snow in 1987, a DC-9 is delayed on the tarmac. When the crew is finally cleared for takeoff, the plane gets only 20 feet off the ground before banking sharply and slamming back down, killing 28 of the 82 people on board. Follow investigators as they uncover why Continental Airlines Flight 1713 crashed in bad weather while others safely took off.

An MD-82 crash lands in Arkansas during a severe thunderstorm, but investigators believe weather was not the main reason for the accident.

An MD-82 crash lands in Arkansas during a severe thunderstorm, but investigators believe weather was not the main reason for the accident.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

LAM Mozambique Airlines Flight 470 is headed for Luanda, Angola when it disappears from the radar. Rangers in a remote Namibian park eventually discover the wreckage and NTSB investigators join a local team for their largest case to date.

LAM Mozambique Airlines Flight 470 is headed for Luanda, Angola when it disappears from the radar. Rangers in a remote Namibian park eventually discover the wreckage and NTSB investigators join a local team for their largest case to date.

The crash of Air Moorea Flight 1121 in 2007 is recalled. What should have been a seven-minute island-hop from Moorea to Tahiti ended in disaster when the plane crashed into the ocean two minutes after takeoff.

The crash of Air Moorea Flight 1121 in 2007 is recalled. What should have been a seven-minute island-hop from Moorea to Tahiti ended in disaster when the plane crashed into the ocean two minutes after takeoff.

Recalling the 1985 crash of Japan Airlines Flight 123 in Japan, the worst single-plane crash in history.

Recalling the 1985 crash of Japan Airlines Flight 123 in Japan, the worst single-plane crash in history.

All signs point to bad weather causing the crash of Martinair Flight 495... until investigators make an intriguing discovery.

All signs point to bad weather causing the crash of Martinair Flight 495... until investigators make an intriguing discovery.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

History's most terrifying air disasters, and the investigations that followed, are revisited and reexamined.

Chuck Yeager's historic 1947 flight, in which he broke the sound barrier, is recalled. Included: comments by Yeager and former pilots; and archival footage.

Chuck Yeager's historic 1947 flight, in which he broke the sound barrier, is recalled. Included: comments by Yeager and former pilots; and archival footage.

Discovering the story of how a B-17, "the Memphis Belle," became a symbol of American prowess in defense of freedom.

Discovering the story of how a B-17, "the Memphis Belle," became a symbol of American prowess in defense of freedom.

A look at the most expensive and specialized airplane ever built, the B-2 Stealth bomber.

A look at the most expensive and specialized airplane ever built, the B-2 Stealth bomber.

Series premiere. An examination of the sinking of the USS Eagle 56 on April 23, 1945, off the coast of Maine features accounts of dive expeditions to discover the lost wreckage and how the ship ended up at the bottom of the ocean.

Series premiere. An examination of the sinking of the USS Eagle 56 on April 23, 1945, off the coast of Maine features accounts of dive expeditions to discover the lost wreckage and how the ship ended up at the bottom of the ocean.

The divers find the missing stern of Eagle 56. It suggests the ship was sunk by a German torpedo. Investigating if a U-Boat could have attacked the American coast in the final week of WWII.

The divers find the missing stern of Eagle 56. It suggests the ship was sunk by a German torpedo. Investigating if a U-Boat could have attacked the American coast in the final week of WWII.

Featuring the family members of the crew of the last warship that sunk at the US coast during the WWII as they receive the long-denied medals for their loved ones.

Featuring the family members of the crew of the last warship that sunk at the US coast during the WWII as they receive the long-denied medals for their loved ones.

The story of one of the world's most effective war machines: the Viking longship. How its design evolved from swift war canoe to versatile and feared ship that would change the course of history.

The story of one of the world's most effective war machines: the Viking longship. How its design evolved from swift war canoe to versatile and feared ship that would change the course of history.

Vessels that operate in secret, unseen by their enemies are featured from secret missions that helped win World War II, to modern stealth ships using strange shapes and technology to avoid spying ears and eyes.

Vessels that operate in secret, unseen by their enemies are featured from secret missions that helped win World War II, to modern stealth ships using strange shapes and technology to avoid spying ears and eyes.

Bad design, human error and the enemy sent great ships to tragic ends, like Britain's K13 submarine and HMS Hood, Sweden's 17th century Vasa, and Kublai Khan's fleet, sunk by the original kamikaze.

Bad design, human error and the enemy sent great ships to tragic ends, like Britain's K13 submarine and HMS Hood, Sweden's 17th century Vasa, and Kublai Khan's fleet, sunk by the original kamikaze.

Stories of espionage at sea, including deadly U-boat cat-and-mouse games during WWI, the sinking of theLusitania, a gun-smuggling private yacht that made history, and liners turned troopships.

Stories of espionage at sea, including deadly U-boat cat-and-mouse games during WWI, the sinking of theLusitania, a gun-smuggling private yacht that made history, and liners turned troopships.

The F-86 Sabre is spotlighted.

The F-86 Sabre is spotlighted.

The inside story of the U.S. military's go-to fighter for over four decades: the F-4 Phantom.

The inside story of the U.S. military's go-to fighter for over four decades: the F-4 Phantom.

The heavy bomber B-24 Liberator designed by Consolidated Aircraft of San Diego, CA is highlighted. It holds the record of being the most produced bomber plane with around 18,500 units made. It was heavily used during World War II by the U.S. Armed Forces, as well as by other Allied air forces.

The heavy bomber B-24 Liberator designed by Consolidated Aircraft of San Diego, CA is highlighted. It holds the record of being the most produced bomber plane with around 18,500 units made. It was heavily used during World War II by the U.S. Armed Forces, as well as by other Allied air forces.

Inside stories of the most iconic military aircraft from WWII.

Inside stories of the most iconic military aircraft from WWII.

Inside stories of the most iconic military aircraft from the Cold War.

Inside stories of the most iconic military aircraft from the Cold War.

Site interpreter Steve Adelson discusses the Battle of the Little Bighorn and Custer's Last Stand.

Site interpreter Steve Adelson discusses the Battle of the Little Bighorn and Custer's Last Stand.

A deep-ocean search for four German cruisers destroyed in one of WWI's bloodiest sea battles.

A deep-ocean search for four German cruisers destroyed in one of WWI's bloodiest sea battles.

Remembering the passengers and crew aboard the Lusitania when it was torpedoed by a German submarine off the Irish coast on May 7, 1915. Also: the story of the German commander who ordered the attack.

Remembering the passengers and crew aboard the Lusitania when it was torpedoed by a German submarine off the Irish coast on May 7, 1915. Also: the story of the German commander who ordered the attack.

Three fatal design flaws put air crash investigators in a storm of controversy.

Three fatal design flaws put air crash investigators in a storm of controversy.

An investigation is opened after a commuter turboprop crashed on a hill in New Zealand.

An investigation is opened after a commuter turboprop crashed on a hill in New Zealand.

A 1971 midair collision between a Hughes Airwest flight and an F-4 Phantom fighter jet is recalled.

A 1971 midair collision between a Hughes Airwest flight and an F-4 Phantom fighter jet is recalled.

Relive one of the most shocking air disasters in American history as we revisit the 1999 crash that killed JFK Jr.

Relive one of the most shocking air disasters in American history as we revisit the 1999 crash that killed JFK Jr.

An investigation of the 2010 crash of Polish Air Force Tupolev Tu-154M, which killed everyone on board, including Polish president Lech Kaczynski.

An investigation of the 2010 crash of Polish Air Force Tupolev Tu-154M, which killed everyone on board, including Polish president Lech Kaczynski.

A new season of air catastrophes, featuring crashes in the Himalayas, the Atlantic Ocean, an Argentine desert, and more.

A new season of air catastrophes, featuring crashes in the Himalayas, the Atlantic Ocean, an Argentine desert, and more.

A new season of air catastrophes, featuring crashes in the Himalayas, the Atlantic Ocean, an Argentine desert, and more.

A new season of air catastrophes, featuring crashes in the Himalayas, the Atlantic Ocean, an Argentine desert, and more.

The 2009 crash of Air France Flight 447 over the Atlantic Ocean, which killed 228 people, is examined.

The 2009 crash of Air France Flight 447 over the Atlantic Ocean, which killed 228 people, is examined.

An August 2005 incident in which an Airbus A340 skidded off a runway, endangering the lives of more than 300 people on board, is investigated.

An August 2005 incident in which an Airbus A340 skidded off a runway, endangering the lives of more than 300 people on board, is investigated.

Just 12 minutes after takeoff, a twin turboprop loses hydraulics, an engine, and then catches fire. Find out why.

Just 12 minutes after takeoff, a twin turboprop loses hydraulics, an engine, and then catches fire. Find out why.

The 1982 crash of Air Florida Flight 90 into the Potomac River is recalled.

The 1982 crash of Air Florida Flight 90 into the Potomac River is recalled.

Investigators are baffled by the Garuda Indonesia Flight 152 crash.

Investigators are baffled by the Garuda Indonesia Flight 152 crash.

It was supposed to be a routine 50-minute hop from Columbia, SC to Charlotte, NC for USAir Flight 1016. But in an instant, a beautiful summer day gave way to one of the most powerful microbursts on record, sending the DC-9 crashing to Earth and killing 37 of the 52 passengers on board. While the storm was intense, investigators are not convinced weather alone caused the disaster.

It was supposed to be a routine 50-minute hop from Columbia, SC to Charlotte, NC for USAir Flight 1016. But in an instant, a beautiful summer day gave way to one of the most powerful microbursts on record, sending the DC-9 crashing to Earth and killing 37 of the 52 passengers on board. While the storm was intense, investigators are not convinced weather alone caused the disaster.

On a commuter flight from Minneapolis to Hibbing in 1993, Northwest Airlink Flight 5719 descends into the clouds on a cold Minnesota night. Suddenly, the pilots of the twin-engine turboprop find themselves ricocheting off the treetops, crashing violently into a hillside. Investigators face intense pressure to find the cause of the crash that killed all 18 people on board.

On a commuter flight from Minneapolis to Hibbing in 1993, Northwest Airlink Flight 5719 descends into the clouds on a cold Minnesota night. Suddenly, the pilots of the twin-engine turboprop find themselves ricocheting off the treetops, crashing violently into a hillside. Investigators face intense pressure to find the cause of the crash that killed all 18 people on board.

Aviation disasters and near misses that were caused by severe-weather encounters.

Aviation disasters and near misses that were caused by severe-weather encounters.

Aviation disasters and near misses that were caused by severe-weather encounters.

Aviation disasters and near misses that were caused by severe-weather encounters.

The worst plane crash in Egypt's history becomes one the most controversial when the investigation focuses on one pilot's intentions.

The worst plane crash in Egypt's history becomes one the most controversial when the investigation focuses on one pilot's intentions.

The investigation into a midair collision over Cerritos, Cal., leads to improvements in how planes are monitored.

The investigation into a midair collision over Cerritos, Cal., leads to improvements in how planes are monitored.

A smoke-filled DC-10 makes an emergency landing in Cincinnati and, 90 seconds later, bursts into flames.

A smoke-filled DC-10 makes an emergency landing in Cincinnati and, 90 seconds later, bursts into flames.

It's a routine takeoff on an ordinary morning in 2015 when Germanwings Flight 9525 leaves Barcelona for Dusseldorf. But something goes horribly wrong over the French Alps. The plane begins rapidly descending and air traffic control gets no response from the cockpit. Everyone's worst fears are realized when the plane is found smashed to pieces in the mountains. All passengers and crew aboard are dead.

It's a routine takeoff on an ordinary morning in 2015 when Germanwings Flight 9525 leaves Barcelona for Dusseldorf. But something goes horribly wrong over the French Alps. The plane begins rapidly descending and air traffic control gets no response from the cockpit. Everyone's worst fears are realized when the plane is found smashed to pieces in the mountains. All passengers and crew aboard are dead.

A dangerous test flight may be the only way to uncover the truth about what brought down a twin-turboprop aircraft in Georgia.

A dangerous test flight may be the only way to uncover the truth about what brought down a twin-turboprop aircraft in Georgia.

The 2013 crash of Asiana Airlines Flight 214 in San Francisco shocks the nation.

The 2013 crash of Asiana Airlines Flight 214 in San Francisco shocks the nation.

On 8 March 2014, Malaysia Airlines Flight 370 disappears en route from Kuala Lumpur to Beijing with 239 passengers and crew on board. The aircraft has never been found.

On 8 March 2014, Malaysia Airlines Flight 370 disappears en route from Kuala Lumpur to Beijing with 239 passengers and crew on board. The aircraft has never been found.

Continental Express Flight 2286, a Trans-Colorado Airlines commuter plane, flies over the Rocky Mountains heading to Durango-La Plata County Airport in 1988. Five miles from touchdown, something goes terribly wrong. There's no sign of the runway and before both pilots can react, the aircraft crashes in the frozen wilderness. Nine of the 17 people on board are killed, and investigators are left scrambling for answers.

Continental Express Flight 2286, a Trans-Colorado Airlines commuter plane, flies over the Rocky Mountains heading to Durango-La Plata County Airport in 1988. Five miles from touchdown, something goes terribly wrong. There's no sign of the runway and before both pilots can react, the aircraft crashes in the frozen wilderness. Nine of the 17 people on board are killed, and investigators are left scrambling for answers.

A commuter flight over France makes a sightseeing detour that sets off a deadly chain of events.

A commuter flight over France makes a sightseeing detour that sets off a deadly chain of events.

A blackened scar on a frozen field near Detroit marks the fatal impact zone of Flight 3272. The sudden loss of 29 lives leaves families in anguish and investigators perplexed. In search of answers, the NTSB turns to the FAA only to discover that federal regulators themselves may be part of the problem. Witness the stunning 1997 crash of this small commuter aircraft and discover how outdated ideas put pilots and passengers at risk.

A blackened scar on a frozen field near Detroit marks the fatal impact zone of Flight 3272. The sudden loss of 29 lives leaves families in anguish and investigators perplexed. In search of answers, the NTSB turns to the FAA only to discover that federal regulators themselves may be part of the problem. Witness the stunning 1997 crash of this small commuter aircraft and discover how outdated ideas put pilots and passengers at risk.

When a Norwegian commuter plane skids off the runway and plunges down a rocky cliff, investigators must find out what went wrong.

When a Norwegian commuter plane skids off the runway and plunges down a rocky cliff, investigators must find out what went wrong.

The 1996 crash in Croatia of USAF IFO-21, an executive transport aircraft carrying Commerce Secretary Ron Brown and 34 others, is examined.

The 1996 crash in Croatia of USAF IFO-21, an executive transport aircraft carrying Commerce Secretary Ron Brown and 34 others, is examined.

In the Season 6 premiere, a Navy cruiser in the Persian Gulf must determine if an incoming plane is friend or foe.

In the Season 6 premiere, a Navy cruiser in the Persian Gulf must determine if an incoming plane is friend or foe.

Recalling the 1989 flight of United Airlines Flight 232, a DC-10 that lost its hydraulic system. Aided by a DC-10 instructor, the crew struggled to maintain some control over the aircraft and save the 296 people on board.

Recalling the 1989 flight of United Airlines Flight 232, a DC-10 that lost its hydraulic system. Aided by a DC-10 instructor, the crew struggled to maintain some control over the aircraft and save the 296 people on board.

A flyover tour of America's natural wonders, including South Dakota's Badlands and Yellowstone National Park.

A flyover tour of America's natural wonders, including South Dakota's Badlands and Yellowstone National Park.

An aerial tour of Georgia. Included: the Atlanta skyline; Augusta National Golf Club, home of the Masters; the barrier-island coastline; a Civil War prison; and a cemetery said to be haunted.

An aerial tour of Georgia. Included: the Atlanta skyline; Augusta National Golf Club, home of the Masters; the barrier-island coastline; a Civil War prison; and a cemetery said to be haunted.

Starbucks' headquarters, Motown Records and Talladega Superspeedway are among the stops on this flyover tour that spotlights American ingenuity.

Starbucks' headquarters, Motown Records and Talladega Superspeedway are among the stops on this flyover tour that spotlights American ingenuity.

Flyover tours of protected areas, including Denali National Park in Alaska and the Everglades in Florida.

Flyover tours of protected areas, including Denali National Park in Alaska and the Everglades in Florida.

A flyover tour of Illinois.

A flyover tour of Illinois.

A flyover tour of Indiana.

A flyover tour of Indiana.

An aerial tour of California.

An aerial tour of California.

A flyover tour of natural wonders, man-made marvels, hidden treasures and places of inspiration.

A flyover tour of natural wonders, man-made marvels, hidden treasures and places of inspiration.

For centuries, thousands of adventurers have answered Alaska's "call of the wild," seeking thrills and fortunes in a state rife with postcard-perfect beauty... and lethal dangers. Take flight across ancient glaciers, rugged mountain ranges, primeval forests, and pristine waterways.

For centuries, thousands of adventurers have answered Alaska's "call of the wild," seeking thrills and fortunes in a state rife with postcard-perfect beauty... and lethal dangers. Take flight across ancient glaciers, rugged mountain ranges, primeval forests, and pristine waterways.

An aerial tour of Maine.

An aerial tour of Maine.

A flyover tour of Washington, D.C.

A flyover tour of Washington, D.C.

Looking back to the disaster that swept from Michigan to Alabama on April 3, 1974.

Looking back to the disaster that swept from Michigan to Alabama on April 3, 1974.

Stories of people caught in the path of a powerful tornado that touched down in Oklahoma in 1999.

Stories of people caught in the path of a powerful tornado that touched down in Oklahoma in 1999.

The 2004 Indian Ocean tsunami, which killed hundreds of thousands of people, is detailed via eyewitness accounts and home videos.

The 2004 Indian Ocean tsunami, which killed hundreds of thousands of people, is detailed via eyewitness accounts and home videos.

The April 2015 earthquake in Nepal is detailed in this documentary, which features footage of the disaster from a Nepali teen who was filming in Kathmandu when it struck; and from a German mountain climber who filmed the avalanche on Mount Everest. Also: the story of Randall Ercanbrack and his daughter Haley, who survived the initial avalanche while at Base Camp 2 on Everest only for Randall to suffer high-altitude pulmonary edema.

The April 2015 earthquake in Nepal is detailed in this documentary, which features footage of the disaster from a Nepali teen who was filming in Kathmandu when it struck; and from a German mountain climber who filmed the avalanche on Mount Everest. Also: the story of Randall Ercanbrack and his daughter Haley, who survived the initial avalanche while at Base Camp 2 on Everest only for Randall to suffer high-altitude pulmonary edema.

The April 2015 earthquake in Nepal is detailed in this documentary, which features footage of the disaster from a Nepali teen who was filming in Kathmandu when it struck; and from a German mountain climber who filmed the avalanche on Mount Everest. Also: the story of Randall Ercanbrack and his daughter Haley, who survived the initial avalanche while at Base Camp 2 on Everest only for Randall to suffer high-altitude pulmonary edema.

A list of 10 key errors and missteps that were made before, during, and after the 1980 eruption of Mount St. Helens in Washington state.

Within a month of each other, two massive volcanoes erupt and unleash terror in very different ways.

Within a month of each other, two massive volcanoes erupt and unleash terror in very different ways.

Within a month of each other, two massive volcanoes erupt and unleash terror in very different ways.

Beneath the spectacular beauty of Yellowstone National Park lies a ticking time bomb...a supervolcano that's overdue for its next eruption. When that day inevitably comes, it will trigger the end of civilization as we know it. See how recent earthquake swarms and other signals of activity have put scientists on high alert for a large-scale super volcanic eruption.

Beneath the spectacular beauty of Yellowstone National Park lies a ticking time bomb...a supervolcano that's overdue for its next eruption. When that day inevitably comes, it will trigger the end of civilization as we know it. See how recent earthquake swarms and other signals of activity have put scientists on high alert for a large-scale super volcanic eruption.

Beneath the spectacular beauty of Yellowstone National Park lies a ticking time bomb...a supervolcano that's overdue for its next eruption. When that day inevitably comes, it will trigger the end of civilization as we know it. See how recent earthquake swarms and other signals of activity have put scientists on high alert for a large-scale super volcanic eruption.

The 1987 crash of Northwest Airlines Flight 255 in Michigan is recalled. Everyone aboard except one 4-year-old girl perished.

The 2002 crash of Air China Flight 129 is examined.

The 2002 crash of Air China Flight 129 is examined.

The 2002 crash of Air China Flight 129 is examined.

The series premiere examines the 1985 crash of Delta Air Lines Flight 191 at the Dallas-Fort Worth Airport, in which 136 people died. Included: how National Transportation Safety Board investigators determined the cause of the crash.

A private Learjet carrying golf legend and reigning U.S. Open champion Payne Stewart takes off from Orlando heading for Dallas in 1999. But within minutes, air traffic control loses contact with the aircraft. The situation grows more urgent when the plane begins an unplanned trajectory across the Midwest. Air Force F-16 fighter planes scramble to intercept the Learjet, only to discover that the pilots and passengers are dead. The only question is why it happened.

A private Learjet carrying golf legend and reigning U.S. Open champion Payne Stewart takes off from Orlando heading for Dallas in 1999. But within minutes, air traffic control loses contact with the aircraft. The situation grows more urgent when the plane begins an unplanned trajectory across the Midwest. Air Force F-16 fighter planes scramble to intercept the Learjet, only to discover that the pilots and passengers are dead. The only question is why it happened.

A private Learjet carrying golf legend and reigning U.S. Open champion Payne Stewart takes off from Orlando heading for Dallas in 1999. But within minutes, air traffic control loses contact with the aircraft. The situation grows more urgent when the plane begins an unplanned trajectory across the Midwest. Air Force F-16 fighter planes scramble to intercept the Learjet, only to discover that the pilots and passengers are dead. The only question is why it happened.

The two-man crew of a UPS cargo jet must attempt an emergency landing when a fire in the cargo hold fills their cockpit with smoke.

The two-man crew of a UPS cargo jet must attempt an emergency landing when a fire in the cargo hold fills their cockpit with smoke.

The two-man crew of a UPS cargo jet must attempt an emergency landing when a fire in the cargo hold fills their cockpit with smoke.

The 1995 crash of a Super Puma helicopter in the North Sea while ferrying workers to an oil platform is recounted.

An aerial tour of South Carolina, featuring beaches, the Blue Ridge Mountains and Charleston's Rainbow Row.

A flyover tour of Florida.

A flyover tour of Florida.

A flyover tour of Florida.

An aerial tour of Louisiana.

A flyover tour of Texas.

A flyover tour of Texas.

A flyover tour of Texas.

When you soar above Yellowstone, it's easy to see why it became the world's first national park in 1872. It's a place of staggering beauty and fragile creatures, of stunning granite peaks that pierce the sky and colorful springs that may hold secrets about the origins of life. This aerial voyage takes you over high elevation lakes, snaking canyons, sputtering hot geysers, and snow-covered landscapes.

A flyover tour of Puerto Rico and the U.S. Virgin Islands.

A flyover tour of Puerto Rico and the U.S. Virgin Islands.

A flyover tour of Puerto Rico and the U.S. Virgin Islands.

A flyover tour of New York includes Niagara Falls and New York City's Central Park.

An aerial tour of North Carolina, featuring the Outer Banks and inland forests.

A flyover tour of Ohio.

A flyover tour of Oklahoma.

An aerial tour of Oregon. Included: the Cascade Mountains and Columbia River.

A flyover tour of Pennsylvania.

A flyover tour of Rhode Island.

Grab your ticket for a scenic cross-country flight, from the mountains to the prairies, and from sea to shining sea.

Germany's Lightning War on France is explored through never-before-seen colorized battle footage, newsreels, and personal, firsthand accounts.

Germany's Lightning War on France is explored through never-before-seen colorized battle footage, newsreels, and personal, firsthand accounts.

Germany's Lightning War on France is explored through never-before-seen colorized battle footage, newsreels, and personal, firsthand accounts.

The inside story of Nazi Germany's unprecedented aerial assault on Britain's major cities and how the resilience of its citizens became a news event.

The inside story of Nazi Germany's unprecedented aerial assault on Britain's major cities and how the resilience of its citizens became a news event.

The inside story of Nazi Germany's unprecedented aerial assault on Britain's major cities and how the resilience of its citizens became a news event.

A 1941 British commando raid in Norway on Nazi fish oil factories, which were being used to manufacture nitroglycerin, is recalled.

A 1941 British commando raid in Norway on Nazi fish oil factories, which were being used to manufacture nitroglycerin, is recalled.

A 1941 British commando raid in Norway on Nazi fish oil factories, which were being used to manufacture nitroglycerin, is recalled.

A fresh perspective to one of humanity's greatest triumphs, victory over Nazi Germany, with rare color footage, haunting home movies and first-person stories on the 75th anniversary of VE Day.

A fresh perspective to one of humanity's greatest triumphs, victory over Nazi Germany, with rare color footage, haunting home movies and first-person stories on the 75th anniversary of VE Day.

A fresh perspective to one of humanity's greatest triumphs, victory over Nazi Germany, with rare color footage, haunting home movies and first-person stories on the 75th anniversary of VE Day.

The 1979 crash of American Airlines Flight 191 at Chicago's O'Hare International Airport, which killed everyone aboard, is recalled.

The 1979 crash of American Airlines Flight 191 at Chicago's O'Hare International Airport, which killed everyone aboard, is recalled.

The 1979 crash of American Airlines Flight 191 at Chicago's O'Hare International Airport, which killed everyone aboard, is recalled.

A 2001 collision between an airliner and a business jet at Linate Airport in Milan, Italy, is examined.

A 2001 collision between an airliner and a business jet at Linate Airport in Milan, Italy, is examined.

A 2001 collision between an airliner and a business jet at Linate Airport in Milan, Italy, is examined.

The Season 4 premiere recalls the 1983 landing of a Reeve Aleutian Airlines plane that was severely damaged while in flight over the Pacific Ocean.

The Season 4 premiere recalls the 1983 landing of a Reeve Aleutian Airlines plane that was severely damaged while in flight over the Pacific Ocean.

The Season 4 premiere recalls the 1983 landing of a Reeve Aleutian Airlines plane that was severely damaged while in flight over the Pacific Ocean.

Airplane crashes involving high-profile passengers put added pressure on investigators.

Airplane crashes involving high-profile passengers put added pressure on investigators.

Airplane crashes involving high-profile passengers put added pressure on investigators.

A plane crash in the Florida Everglades leads to a dangerous rescue effort and an explosive investigation.

A plane crash in the Florida Everglades leads to a dangerous rescue effort and an explosive investigation.

A plane crash in the Florida Everglades leads to a dangerous rescue effort and an explosive investigation.

The investigation of the November 2001 crash of a passenger plane in Queens, N.Y., is recounted.

The investigation of the November 2001 crash of a passenger plane in Queens, N.Y., is recounted.

The investigation of the November 2001 crash of a passenger plane in Queens, N.Y., is recounted.

The investigation into the 2008 crash of XL Airways Germany Airbus A320 is recounted.

The investigation into the 2008 crash of XL Airways Germany Airbus A320 is recounted.

The investigation into the 2008 crash of XL Airways Germany Airbus A320 is recounted.

After a long delay on a hot July evening in 1996, TWA Flight 800 leaves John F. Kennedy Airport carrying 230 passengers and crew en route to Paris. Minutes after takeoff, the Boeing 747 jumbo jet suddenly explodes without warning, killing everyone aboard. Was it a bomb? A missile? A design flaw? To find the answer, the NTSB must attempt the unthinkable: rebuild the entire plane, piece by shattered piece.

After a long delay on a hot July evening in 1996, TWA Flight 800 leaves John F. Kennedy Airport carrying 230 passengers and crew en route to Paris. Minutes after takeoff, the Boeing 747 jumbo jet suddenly explodes without warning, killing everyone aboard. Was it a bomb? A missile? A design flaw? To find the answer, the NTSB must attempt the unthinkable: rebuild the entire plane, piece by shattered piece.

After a long delay on a hot July evening in 1996, TWA Flight 800 leaves John F. Kennedy Airport carrying 230 passengers and crew en route to Paris. Minutes after takeoff, the Boeing 747 jumbo jet suddenly explodes without warning, killing everyone aboard. Was it a bomb? A missile? A design flaw? To find the answer, the NTSB must attempt the unthinkable: rebuild the entire plane, piece by shattered piece.

A 1956 mid-air collision of two commercial airliners is recalled.

A 1956 mid-air collision of two commercial airliners is recalled.

A 1956 mid-air collision of two commercial airliners is recalled.

The 2000 crash of an Air France Concorde into a Paris hotel is investigated.

The 2000 crash of an Air France Concorde into a Paris hotel is investigated.

The 2000 crash of an Air France Concorde into a Paris hotel is investigated.

An NOAA research plane's 1989 encounter with Hurricane Hugo, a Category 5 storm, is recalled.

An NOAA research plane's 1989 encounter with Hurricane Hugo, a Category 5 storm, is recalled.

An NOAA research plane's 1989 encounter with Hurricane Hugo, a Category 5 storm, is recalled.

One of the worst crashes in British history has a stunning cause that changed aviation safety forever.

One of the worst crashes in British history has a stunning cause that changed aviation safety forever.

One of the worst crashes in British history has a stunning cause that changed aviation safety forever.

Not far from Congonhas Airport, a Sao Paulo neighborhood is in flames. It's a scene of devastation caused by TAM Airlines Flight 3054, a plane that crashed just seconds after takeoff in July 2007. With a shocked nation watching, investigators from the Brazilian Air Force join forces with the National Transportation Safety Board to learn what happened.

Not far from Congonhas Airport, a Sao Paulo neighborhood is in flames. It's a scene of devastation caused by TAM Airlines Flight 3054, a plane that crashed just seconds after takeoff in July 2007. With a shocked nation watching, investigators from the Brazilian Air Force join forces with the National Transportation Safety Board to learn what happened.

Not far from Congonhas Airport, a Sao Paulo neighborhood is in flames. It's a scene of devastation caused by TAM Airlines Flight 3054, a plane that crashed just seconds after takeoff in July 2007. With a shocked nation watching, investigators from the Brazilian Air Force join forces with the National Transportation Safety Board to learn what happened.

An investigation on what caused the Kazakhstan Airlines and Saudi Airways to collide mid-air.

An investigation on what caused the Kazakhstan Airlines and Saudi Airways to collide mid-air.

An investigation on what caused the Kazakhstan Airlines and Saudi Airways to collide mid-air.

A last-minute repair may have played a key role in the crash of a plane leaving Madrid International Airport in August 2008.

A last-minute repair may have played a key role in the crash of a plane leaving Madrid International Airport in August 2008.

A last-minute repair may have played a key role in the crash of a plane leaving Madrid International Airport in August 2008.

Two deadly Boeing 737 crashes during the 1990s are investigated.

Two deadly Boeing 737 crashes during the 1990s are investigated.

Two deadly Boeing 737 crashes during the 1990s are investigated.

The story of China Airlines Flight 006, which almost crashed into the Pacific Ocean after experiencing engine trouble. The investigation of the incident detailed how jet lag and lack of sleep can impact pilots.

The story of China Airlines Flight 006, which almost crashed into the Pacific Ocean after experiencing engine trouble. The investigation of the incident detailed how jet lag and lack of sleep can impact pilots.

The story of China Airlines Flight 006, which almost crashed into the Pacific Ocean after experiencing engine trouble. The investigation of the incident detailed how jet lag and lack of sleep can impact pilots.

A Boeing 757 takes off from Washington Dulles International Airport en route to Los Angeles. In minutes, hijackers storm the cockpit and turn the plane back toward the nation's capital and straight into the Pentagon. A total of 189 people are dead, the fuselage has been vaporized, and investigators are under tremendous pressure to determine how this could have happened.

A Boeing 757 takes off from Washington Dulles International Airport en route to Los Angeles. In minutes, hijackers storm the cockpit and turn the plane back toward the nation's capital and straight into the Pentagon. A total of 189 people are dead, the fuselage has been vaporized, and investigators are under tremendous pressure to determine how this could have happened.

A Boeing 757 takes off from Washington Dulles International Airport en route to Los Angeles. In minutes, hijackers storm the cockpit and turn the plane back toward the nation's capital and straight into the Pentagon. A total of 189 people are dead, the fuselage has been vaporized, and investigators are under tremendous pressure to determine how this could have happened.

The 2004 incident in which a charter jet crashed into the Red Sea minutes after take off is investigated.

The 2004 incident in which a charter jet crashed into the Red Sea minutes after take off is investigated.

The 2004 incident in which a charter jet crashed into the Red Sea minutes after take off is investigated.

The 1991 crash of Continental Express Flight 2574 in Texas, which killed 14 people, is investigated.

The 1991 crash of Continental Express Flight 2574 in Texas, which killed 14 people, is investigated.

The 1991 crash of Continental Express Flight 2574 in Texas, which killed 14 people, is investigated.