B757 electrical questions
Found myself thinking about a few things which I cannot find the answers to, prompted by the Quantas 747 supposed AC system failure. So:
Would someone be kind enough to provide an exhaustive list of items supplied by the battery and hot battery busses?
The HDG (if fitted) uses left hydraulic system pressure to provide power to various AC and DC busses. How exactly does it provide the DC power? In the event the entire AC system being disabled in the same manner as the Quantas 747 seemingly suffered, would the HDG continue to supply DC power?
Finally, should the worst happen and you find yourself flying a 757 with ABSOLUTELY NO electrical power of any kind (battery included), what is left? I'd guess at:
-Engines operating in degraded mode (no EEC/ELC)
-Left and right hydraulic pressure from the engines, centre pressure from the RAT
-Primary flight controls
-Standby Airspeed Indicator, Standby Altimeter and Standby Magnetic Compass
-Normal landing gear operation (no gear indications)
-Normal brake pressure (no antiskid)
-Normal nose wheel steering
and nothing else.
Any comments on whether you think I have this correct are appreciated. I intend to try all this next time I'm in the sim!
Thanks