Originally Posted by
510orbust
Barrel Owl - Push heading select dial the knob to your intended track and the aircraft turns, not sure if this is your question, used daily on every flight for vectors to avoid climbing or descending aircraft or delaying vectors
Correct, if you push HDG, this overrides the current flight plan stored in the FMC and the aircraft simply turns to the new selected track. But this also results in the aircraft following now the pilot's inputs, not the FMC. See my point?
Then, two questions:
1. If the FMC had been pre-programmed to follow to VAMPI after IGARI, as reported here, then why did the aircraft clearly turned right, as headed for BITOD?
2. If the cockpit intended to hijack the aircraft after IGARI and make a straight left-turn following navigation points in manual without following the original flight plan stored in the FMC, then why should they care to insert a change in the FMC after IGARI?
Sorry, but this report that the left turn had been pre-programmed in the FMC and reported in the ACARS log before 1:07 makes no sense to me.