No aircraft is immune from stalling Finding Nemo. The bus tries to help you not get into that corner of the envelope. Unfortunately a lot of people think that in Normal law the bus is immune to the laws of Physics and Mother Nature
From the FCTM-
High AOA protection enables the PF to pull the sidestick full aft in dangerous situations, and thus consistently achieve the best possible aircraft lift. This action on the sidestick is instinctive, and the high AOA protection minimises the risk of stalls or control loss.
High AOA protection is an aerodynamic protection:
The PF will notice if the normal flight envelope is exceeded for any reason, because the autopitch trim will stop, the aircraft will sink to maintain its current AOA (alpha PROT, strong static stability), and a significant change in aircraft behavior will occur.
If the PF then pulls the sidestick full aft, a maximum AOA (approximately corresponding to CL Max) is commanded. In addition, the speedbrakes will automatically retract, if extended.
OPERATIONAL RECOMMENDATIONS:
When flying at alpha max, the PF can make gentle turns, if necessary.
The PF must not deliberately fly the aircraft in alpha protection, except for brief periods, when maximum maneuvering speed is required.
If alpha protection is inadvertently entered, the PF must exit it as quickly as possible, by easing the sidestick forward to reduce the angle-of-attack, while simultaneously adding power (if alpha floor has not yet been activated, or has been cancelled). If alpha floor has been triggered, it must be cancelled with the instinctive disconnect pushbutton (on either thrust lever), as soon as a safe speed is resumed.
In case of GPWS/SHEAR:
Set the thrust levers to TOGA
Pull the sidestick to full aft (For shear, fly the SRS, until full aft sidestick).
Initially maintain the wings level
This immediately provides maximum lift/maximum thrust/minimum drag. Therefore, CFIT escape maneuvers will be much more efficient.
Last edited by tubby linton; 20th Jan 2015 at 23:32.