investigate the background of the ex-pat copilots.
Be it good or bad there is nothing in the background of the First Officer on this SilkAir flight that would give any cause, whatsoever, to even wonder if he may have been involved in a very high speed, full power on, dive into a river with the flight recorder CBs pulled. On the other hand, the background of the captain speaks volumes. Duncan was a young man on the threshold of an airline career with everything to go for. The captain, an ex RSAF Major, I believe, thought he should have been a trainer on the B744 with SIA mainline but had been rejected by SIA and found himself as a line pilot with SilkAir on the 737 having recently been demoted from a training position for very non standard behaviour.
Why this pre-occupation with the FOs background?