Nat Geo HD

7+.

The Coastguard follow a smugglers' trail, a family in danger is rescued, the Customs Surveillance team take on a special operation and divers protect Roman artefacts. 7+.

Adam Air Flight 574 was miles off course when it vanished from radar. Investigators reveal why the plane crashed killing 102 people on board. (S7, ep 7) 7+.

An idyllic spring morning was interrupted when a dormant volcano erupted, spouting ash and killing 57 people. Why didn't scientists know it was going to blow? 7+.

When a suffering German U-Boat crew make a desperate run for survival, Allied Hunter Killer groups close in - but the Germans board and attack the American ship. (6 of.

As a deadly battle threatens to bring the US's B-29 bomber in reach of Japan, the Japanese bank on a weapon of their own to bring them victory. (S5, ep 2) RATING: NU.

In 2005 a passenger jet crashed into the Mediterranean Sea. Follow the consequent criminal investigation which resulted in 9 men being charged with negligence. 7+.

Flying from the Kathmandu to Pokhara, Yeti Airlines Flight 691 stalls and crashes into a gorge where investigators find a scene of annihilation. (1 of 10) 7+.

From mundane questions of survival to creating a stronger and better soldier and how the Nazis used science to study human constitution and its limits. (S1, ep 5) 7+.

Experts head to the seafloor in search of answers to one crucial question - can the lessons learnt from previous air disasters solve the mystery of lost flights? 7+.

Thord and Bjoern face a roadside stand-off with the police when they're forced to stop a rescue in its tracks. (S7, ep 8) 7+.

Take a tour of some of the world's most expensive and useless airports and learn why a Shanghai apartment tower dropped like a slab. (S2, ep 4) 7+.

When Air India Flight 182 disappeared from the radar, controllers were left baffled. Investigators later discovered a sinister reason for the deadly crash. 7+.

An Airside Electrical team investigates faulty airfield lights and find that rodents have damaged the cabling while taking refuge from the brutal winter. (S1, ep 10) 7+.

Tim and Fuzz try to surprise Noel with a secret fix-up of his beloved 1972 coupe. But the car is so rare, the parts are nearly impossible to find. (S7, ep 4) 7+.

Tim and Fuzz restore Adam's Datsun 240k Skyline, a rare Japanese classic from the 1970s. After a spell of ill health, can they get Adam back on the road? (S12, ep 5) 7+.

What Happened?: In this special episode, examine one of the greatest aviation mysteries of all time - the disappearance of Malaysia Airlines Flight 370. 7+.