TV Guide National Geographic Channel Sunday

Multiple 911 calls push Dawson City to the brink as first responders battle to save a family home and a historic building, while snowstorms pummel Whitehorse, causing chaos and forcing a dangerous backcountry helicopter rescue mission

In Devon, Tim Shaw and Fuzz Townshend take on the task of restoring a 1958 Messerschmitt KR200 Bubble Car for classic car fan Sam. But the tiny car - a three-wheeled, rusting heap that has lain dormant for decades - proves to be a massive restoration project. The single cylinder, two-stroke engine hasn't started for years and needs a full rebuild, and the microcar's shattered acrylic canopy needs replacing. However, finding one proves difficult.

Barry has long harboured hopes of restoring his 1984 Audi UR Quattro. However, his poor health has left him sapped of energy, so Fuzz Townshend and Tim Shaw step in to offer help

A Boeing 737 crashes just moments after lifting off from an Algerian desert airport. For investigators, it's clear the left engine exploded after liftoff, and that a fatigue crack eventually explains why. What's less obvious is why an experienced crew of the state-owned national carrier was unable to keep their plane in the sky

An incident in 1977 when Southern Airways Flight 242, flying over the US state of Georgia, was caught in a storm so severe that hailstones cracked the windscreen, causing the DC-9 to plummet to the ground

In late July 2000, a Concorde operating as Air France Flight 4590 en route to New York City, USA, stalled and crashed into a hotel in Gonesse shorty after take off from Paris' Charles de Gaulle Airport. All the 109 passengers and crew died in the accident, as well as four on the ground. Aviation experts try to explain exactly what went wrong