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Investigators uncover a problem threatening every 747 in the sky as they delve into the worst aviation disaster ever to occur in the Netherlands. 7+.

Experts investigate the tragic fate of UPS Flight 6, a cargo jet which crashed shortly after take-off from Dubai in 2010 when a fire broke out onboard. 7+.

In 1985, Japan Airlines 123 was due to carry 524 passengers from Tokyo to Osaka. But just 12 minutes into the flight, the Boeing 747 suffered a fatal decompression. (S1, ep 2) 7+.

Tim and Fuzz help Trevor, whose recent diagnosis means he's unable to finish his restoration. But his 1964 Porsche is by far the worst car they've ever taken on. 7+.

Customs officers catch a smuggler hiding 2,000 bottles of illegal prescription medication. A ground dispatcher races to prepare a cash shipment of $20 million. (S3, ep 10) 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+.

A decorated war hero volunteers for a dangerous role as America's 7th Infantry Regiment makes a bold bid to drive Nazi forces back across the Rhine.

Hidden worlds emerge beneath cities as tunnels, tombs and underground refuges reveal secrets buried for centuries beneath the surface. (S1, ep 4) 7+.

Archaeologists investigate the mysterious circumstances surrounding the death of King Tutankhamun to uncover the truth behind his demise. 7+.

When two trucks collide in a blizzard, Thord needs his full team and support from Bjoern to clear the trucks and re-open the road. (S10, 5 of 8) 7+.

Hitler orders the largest battleships ever seen. But how long will they last? He also demands fortified bunkers in a bid to protect his U-boats from the Allies. 7+.

A private jet shuttling business passengers to Ohio slams into an apartment building, instantly killing everyone on board. What went wrong? 7+.

Experts discover a missing pilot's unwitting part in a fatal crash as they investigate the collision between United Express 5925 and a private plane. 7+.

Two planes collide in the skies above southern Germany and the catastrophe is witnessed by scores of people on the ground. (S24, 8 of 10) 7+.

In 2009, Air France Flight 447 vanished over the Atlantic Ocean, with the wreckage only being found two years later. But what caused the catastrophic crash? (S1, ep 7) 7+.

After taking off from Taiwan, a China Airlines 747 suddenly disappeared from radar and crash-landed, killing 225 people. Researchers try to find out why. 7+.