I've been contemplating the FDR data:
1. The heading trace shows a constant heading in the six seconds before impact (i.e. no lateral avoiding action was happening).
2. At impact, an instantaneous rapid heading change to the right, followed by various rates of right rotation for the remainder of the recording (which you'd expect when the TR ceased to function).
3. The pitch trace shows abrupt aft cyclic flare simultaneously with large collective increase (about 1.5 seconds before impact), rapid NR droop initially, followed by reducing collective and the aircraft climbing slowly at 60kts.
4. NR recovers as engine power increase/collective decrease until point of impact when NR goes slightly high (which you'd expect at the instant the load of the TR is removed).
5. The aircraft continued to climb slowly after impact until the last data point (the last recorded altitude point was about 450').
6. The engines remained at a high/intermediate power setting after impact until the last data point.
Last edited by gulliBell; 14th Apr 2017 at 13:55.