Smithsonian Channel HDTV (East) (SMITHHD)

Confused, blind, and lost in the dark, three crews lose sight of the horizon and fall into the same terrible trap. (Repeat).

PNG flight 1600 loses both of its engines over Papua New Guinea, forcing the pilots to make an emergency landing that proves fatal. (Repeat).

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

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

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 Witness the stunning 1997 crash of this small commuter aircraft and discover how outdated ideas

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

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 landscap

Georgia O'Keeffe once said, "If you ever go to New Mexico, it will itch you for the rest of your life," and this aerial tour of the state will show you exactly why. Take flight over 121,000 square miles of timeless beauty and national treasures, from the Rio Grande, to adobe structures and dormant volcanoes. See what brought O'Keeffe to the Land of Enchantment, as well as Billy the Kid, the makers

A flyover tour of Alabama. (Repeat).

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

A flyover tour of Connecticut. (Repeat).

A tour of America's west. Included: stories of colorful characters and "wild" history. (Repeat).

An aerial tour of Maryland and Delaware. Included: sites associated with Harriet Tubman, Babe Ruth and the du Pont family. (Repeat).

A day-long aerial tour of Boston, where Americans first rebelled against Britain by dumping chests of tea into the harbor, and where rock band Aerosmith first made it big. (Repeat).

A flyover tour of Wyoming. (Repeat).

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

A flyover tour of Utah. (Repeat).

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

Featuring a giant tomb discovered by Egyptian archaeologists that has hundreds of coffins. (Repeat).