Just wondering if you would have Trailing Edge Flap Control with Standby Power only (assuming you had hydraulics from windmilling or running engines to power the flap motors) on the Boeing 747-400.
With Standby Power only, you don't have TE flap position feedback from the flaps on the left hand wing. I
assume the aircraft would see this as an asymmetry and shut down primary flap control.
Thanks.
Rgds.
NSEU