Question:
What functions are lost at FD at dual engine flame out (due to icing)?
Also found this:
Airbus A319/320/321 Notes - Training Notes by Eric Parks
"If both Main AC busses lose power and the airspeed is 100 kts. or more the RAT will automatically deploy.
Note: min. RAT speed is 140 kts, RAT will stall out at less than 125 kt.
100 kts. or more (horisontal speed!), consider eventual stall.....