Ansett B747 accident
Yes, the F/E failed to note that the NLG was not indicating down. No, he did not fail to turn on the "Emergency hydraulic pump", which in fact is the Air driven hydraulic pump, for No 1 hydraulic system. It was found to have less than full output, the reason for which was not determined. Under high demand conditions the ADP's will augment the EDP's. The NLG did not lower, due in part to the fact that the flap was running out right down to touchdown and the hydraulic systems could not cope with the demand of flap and gear simultaneously without all pumps operable. (No 1 engine driven pump was not available). The Captain elected to continue with the landing despite a landing gear warning horn and an unsafe indication. Worth noting that the F/O had not yet completed line training to the type and the F/E was on his first revenue flight on the B747.