Looking for opinions on the APU's role in this crash. Honeywell has been making some hay about the WSJ's story stating the APU was powered in the descent, giving the crew full use of the flight control system. I recall reports stating that one engine was at 35% N1 and the RAT was deployed.
If true, doesn't that make the APU's contribution redundant or unused?
Has it been reported/determined if the APU was re-started in flight, or operating continuously since takeoff?
When (after main engine start) is the APU typically shut off? I though operators were shutting them off before takeoff for fuel savings.
I've waded through most of this thread and didn't see this discussed, the Search function returns zero results for "APU" (too short?) and no joy with "auxiliary" (and several misspelled variants).
Thanks!