Years ago I saw that same 747 SP with the shredded elevators on the ramp in SFO. It got my attention..
Much later on a 767-200 flight; my leg, level at FL410 , coming North from Barbados at night, the airspeed was slowly decreasing, and I noticed the yoke slowly rolling to the right ! I immediately remembered the China Air incident.
Checked the engine instruments, and (small EPR gauges on EFIS) left engine had rolled back to zero thrust. Generator still on line; I disconnected the autopilot, and started a drift down to engine out altitude, EO driftdown speed came up as 217 K , but no way I was going to bring speed back that far. I wanted more rudder authority. We were manoeuvring around some TCU in the descent too so I hand flew it while the Capt. did the checklist..
Engine was surging in descent, but by FL 370 or so it had recovered. Never had to shut it down, EGT didn't rise..
Last edited by Retired DC9 driver; 26th Feb 2019 at 01:57.