1.   What caused the switch gear to fail is still being investigated.

2.   Federal investigators suspect a Vasco gear was responsible for the crash, and Boeing officials acknowledge that a gear did fail.

3.   Imagine the water pressure so heavy it leaves bruises across your back and can leave you dead if your gear fails.

4.   One problem, according to pilots, is that when the gear fails, it results in the engine speeding up while the cockpit tachometer registers zero.