Approach to Stall or Stall Recovery

Question 1

Recall Approach to stall recovery procedure.

Flight levels

Answer 1

1. Disengage autopilot
2. Disengage auto-throttle.
3. Smoothly apply nose down elevator to reduce the angle of attack until buffet or stick shaker stops (3° p/s) to approximately 10° nose down.
   * Nose down stabilizer trim may be needed.

Continue the recovery:
4. Roll in the shortest direction to wings level if needed.
5. Advance thrust levers as needed.
6. Retract the speedbrakes.
* Check airspeed and adjust thrust
as needed.

|Complete the recovery:
7. Establish pitch attitude.
8. Return to desired flight path.
9. Re-engage the autopilot and autothrottle if desired.

• Do not change gear or flap
  configuration.
• Do not use flight director commands during the recovery.

NOTE: Speed is the best indicator for whether wings are stalled or not, however the factor causing the wing to stall is the AoA or ‘critical angle’. A good safety margin indication on the speed tape is ‘half zipper’…

Question 2

Recall Approach to stall recovery procedure.

Final Approach

Answer 2

1. Disengage autopilot
2. Disengage auto-throttle.
3. Promptly apply nose down elevator to reduce the angle of attack until buffet or stick shaker stops
   * Nose down stabilizer trim may be needed.
4. Roll in the shortest direction to wings level if needed.
5. Advance thrust levers forward as needed.
6. Retract the speedbrakes.
   * Check airspeed and adjust thrust
   as needed.

Thrust at low level is much more rapid compared to thrust at high altitude where the trade off between altitude and airspeed is the best option. At low level minimal height loss is essential.

Question 3

What’s the key difference between high altitude stall and low altitude stall?

2 items

Answer 3

1. Recovery at high altitude results in a greater altitude loss than a recovery at low altitudes
2. Thrust is limited and slow to spool up at high altitude

Question 4

Can you change gear or flaps during stall recovery?

Answer 4

No, unless flaps were inadvertently left up during take off, in which case call for flaps 1.