Nat Geo HD

Where building on land isn't possible, engineers build on water. But as traffic and weather take their toll, every repair becomes a race against time. (S1, ep 6) 7+.

A look at the errors that caused the deaths of 118 people in the 2001 Linate airport disaster, regarded as the worst accident in Italian aviation history. 7+.

The Glacier Express train in the Swiss Alps is an engineering marvel traveling over treacherous gorges and through huge mountain ranges. 7+.

Tim and Fuzz take on a 1992 Saab 900 Turbo belonging to former Electrical Engineer Pravesh, who has recently fallen ill. (S10, ep 5) 7+.

Go behind the scenes at one of the world's busiest airports and discover how its 90,000 staff ensure the safe arrival and timely departure of 57 million passengers a year. (S2, ep 1) 7+.

When the cockpit window of Sichuan Airlines 8633 explodes, the crew somehow battles gale-force winds and oxygen deprivation to safely land the plane. (S22, ep 6) 7+.

Attention turns to one of the most fearsome weapons of war, the Kamikaze, a tactic explored by the Nazis and perfected by the Japanese. 7+.

One of the greatest fortifications in warfare history, the campaign to breach Hitler's Siegfried Line cost 140,000 American casualties. (S2, ep 2) 7+.

Archaeologists follow a trail of clues to the tomb of Cleopatra, where, an unexpected mummy-find sheds new light. 7+.

In lakes and rivers of the modern United States, teams of explorers are discovering forgotten shipwrecks from the American Revolution. 7+.

The Nazis erected weather stations in remote and desolate areas. Were the Nazis working to harness the power of the Sun itself with a space-age Sun Gun? (S1, ep 6) 7+.

Experts uncover something startling that threatens cargo pilots worldwide when they investigate the crash of a US plane at Guantanamo Bay.

Three disasters are forensically dissected, from Challenger's fatal launch to a cable car tragedy and an ice rink roof collapse. (S2, ep 5) 7+.

Moments after taking off from Honolulu, the pilots of TransAir Flight 810 battle to keep their cargo plane airborne. (S24, ep 7 of 10) 7+.

British Airways Flight 38 was on final approach into London Heathrow Airport when it crashed just short of the runway on 17 January 2008. (S1, ep 10) 7+.

On 2 August 2005, Air France Flight 358 skidded off the runway in Toronto. An engine caught fire, trapping 300 passengers on the plane. How did they escape? 7+.