1.   On lap two, Millar suffered a burst tire, which caused him to crash.

2.   A burst tire should not cause a crash.

3.   A burst tire was blamed, and to prevent similar accidents, the plane now has tougher tires and Kevlar-lined fuel tanks.

4.   British Airways followed soon after when French and British investigators, believing the plane was brought down by a burst tire, said they would withdraw its airworthiness certification.

5.   Burst tires have been a worry for Concorde pilots since the plane entered service, according to British aviation experts.

6.   But one theory being considered by accident investigators is that debris from a burst tire was sucked into the engines.

7.   But, he said, the burst tire sent debris flying to puncture one or more fuel tanks, allowing fuel to spill out and catch fire within seconds.

8.   In the past, burst tires and wheel fragments have caused a wide range of damage to Concordes.

9.   Sir Malcolm Field, chairman of the British Civil Aviation Authority, told reporters at a news conference that the burst tire was the primary cause of the crash.

10.   Debris from a burst tire struck a fuel tank, according to the report, causing shock waves to rupture the tank from within.