Originally Posted by
BRDuBois
You're right, it does. It looks like charring, actually.
It does, and likely from sloshed fuel as the aircraft flipped.
Airbubba:
Thanks for the clarification.... the witnesses report seems important, and should have been chased down and examined.
1. “At 8-9000 feet down the runway, the sound changed...”
2. Where were these people located? Doppler may have made a difference.
3. If a mile away, there could have been a five second delay in sound travel.
4. The aircraft may have been at 5-6000 feet down the runway.
5. At 160 knots, how much distance need we allow for?
6. Never having climbed to three hundred AGL, any turn that low would have been important, and when associated with power level changes, the initial “turn” may not have been aileron inspired?
7. Looking at pictures of the aileron command cabling. As shown, these cables can not “unthread”, they are retained by a threaded collet, which prevents twisting either direction. The collet itself is threaded, pinned, clipped and safetied.
8. A loss of boost, or locked boost, in and of itself, can be overcome manually after disabling the pumps.
9. Surely switching off the electric pumps should have been on the memory items?
10. If the aileron was indeed at three degrees on impact, when did it return? Was it under manual control? At what point?