Smithsonian Channel HDTV (East) (SMITHHD)

Mid-air tragedies are particularly horrifying when they occur over a community, and rain terror on the people below. (Repeat).

When a commuter turboprop plane crashes at an Irish airport, investigators uncover a startling gap in aviation safety. (Repeat).

Back in July 2002, a cargo plane and a passenger plane crashed with each other after the latter received confusing instructions from the air traffic control. (Repeat).

Bad weather and a series of errors lead to the 2001 crash of a plane on its approach to Zurich Airport. (Repeat).

It's April 2013. A 747 cargo plane leaves Afghanistan's largest airfield with 207,000 pounds of military equipment. Within seconds of takeoff, the pilots lose control of the aircraft. The nose won't drop, and in an instant, the plane stalls and crashes to the ground. The accident is caught on camera, leading investigators to what seems like an obvious conclusion, until further research indicates t

Investigating how a damaged engine might have caused the crash of a plane from Atlantic Southeast Airlines. (Repeat).

In the series premiere, Paul Gauguin navigates delicate waters and offers five-star luxury while sailing the coral reefs, mountainous islands, and tropical playgrounds of French Polynesia. (Repeat).

The Ocean Endeavour is a vessel with an ice-strengthened hull and a fleet of zodiacs; and the staff are experts in Arctic ice, wildlife and natural history. (Repeat).

An ocean liner sails through a hurricane. (Repeat).

MSC Divina features Mediterranean design and North American convenience, carrying 4,200 passengers with stops in the Caribbean. (Repeat).

The Norwegian Joy is tailor-made to sail through the daunting waters of Alaska. This 700,000,000 vessel aims to give its passengers an unforgettable experience. (Repeat).

The world's first cruise ship run on liquefied natural gas, AIDAnova visits the volcanic landscape and stunning beaches of the Canary Islands and Madeira. (Repeat).

Spain is traveled to on Europe's biggest high-speed rail network. Areas are visited under construction between Barcelona and Madrid to expand the infrastructure. The new high-speed train set to hit the tracks in the coming year is featured. (Repeat).

Beautiful sights in Vietnam are shown while traveling on the Reunification Express. The 3-day journey covers 1,072 miles of railway that passes through more than twenty Vietnamese provinces between Hanoi, the northern capital and Ho Chi Minh City, the southern capital. (Repeat).

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

A cruise ship sails from New York to the Carribean. (Repeat).

A look at the construction of the Norwegian Breakaway cruise ship. (Repeat).

Technologies and amenities on the cruise ship Oasis of the Seas. (Repeat).

The Seven Seas Explorer cruise ship is full of marble, granite and almost 500 chandeliers. (Repeat).

At 122,000 gross tons, Celebrity Solstice puts the "mighty" in Mighty Cruise Ships. She carries 1,255 crewmembers and close to 3,000 passengers during her summer journeys along Australia's northern coast, offering ten restaurants, over a dozen bars, a casino, and even a manicured grass lawn. Hop aboard on a luxurious 17-day journey Down Under and explore the country's marvels from Solstice's comfo

A crew of 2,200 on the Symphony of the Seas tends to more than 5,500 passengers as they sail to ports in Spain, France and Italy. (Repeat).

The world's biggest river-cruising company makes a big splash in the ocean-cruising industry. Visiting southern Spain, Normandy and the canals of Amsterdam, the crew navigates narrow passages and battles rough seas. (Repeat).

Viking Long Ship Gefjon visits the great cities of the Danube, Main and Rhine Rivers but the crew must navigate through 67 locks, and face bridges only a few centimetres higher than the ship and river beds that narrow to tight channels. (Repeat).

A sculptural new transportation hub for New York's World Trade Center is beset by challenges. Then, Amsterdam gains a striking building inspired by a mountain valley, and a new launchpad for space travel prepares for liftoff. (Repeat).

In catastrophic runway collisions, investigators must retrace every step. (Repeat).

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

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

A passenger jet tries to make it to land when it runs into trouble over the Indian Ocean. (Repeat).

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

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 weath

The December 1999 crash of Korean Air Cargo Flight 8509 shortly after taking off from London Stansted Airport is recalled. (Repeat).

The 1985 crash of Arrow Air Flight 1285 in Newfoundland, which killed 248 U.S. soldiers returning from the Middle East, is investigated. (Repeat).

A 1977 accident involving Southern Airways Flight 242, a DC-9 that lost power in both engines during a severe thunderstorm. (Repeat).

The 2005 crash of Chalk's Ocean Airways Flight 101 off Miami Beach, which killed 20 people, is examined. (Repeat).

A 1992 crash of an Airbus A320 in the Vosges Mountains in France is recalled. The investigation into the cause led to changes in pilot training and to the design of the plane's cockpit console. (Repeat).

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

The documentary series about surprise Allied attacks during World War II begins with the story of tells the story of an elite group of British paratroopers who launched a midnight raid to capture Hitler's secret radar. (Repeat).

The D-Day story of Easy Company, which parachuted behind enemy lines in the early hours of June 6, 1944. Their assignment: take out four German howitzers that threatened the Allied troops landing on Utah Beach. (Repeat).

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

Recalling Operation Husky, the first invasion of the Italian campaign in WWII. (Repeat).

A 1942 British raid on a Nazi-occupied Libyan harbor is detailed. (Repeat).

Operation Gunnersid, a 1943 attack on the Norsk Hydro Plant in Norway by six Norwegian commandos, is recalled. The plant was being used to produce heavy water, a needed ingredient for nuclear weapons; and the mission was to take the plant offline. (Repeat).

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. (Repeat).

Major events in the Pacific during the last 100 days of World War II are revisited and discussed. It includes the bloody Battle of Okinawa and the dropping of atomic bombs in Hiroshima and Nagasaki. (Repeat).