15 / 20
You are flying a twin engine aircraft with clockwise rotating propellers, if you get an engine failure what should you do?
  • A
    Yaw and roll towards the live engine.
  • B
    Roll and yaw to the dead.
  • C
    Yaw to the dead, roll live.
  • D
    Yaw to the live, roll to the dead.

Rudder to Stop Yaw - Bank Towards Live Engine

This method produces minimum drag and gives the best ability to climb and is the preferred method of putting the aircraft in equilibrium following engine failure.

In the event of an engine failure in a non-centerline thrust twin or multi engine aircraft, the operative engine is going to create a strong yawing moment about the vertical axis of the aircraft in the direction of the dead engine. Uncorrected, this results in a forward slip toward the side of the good engine and, when combined with the fuselage blanking airflow over the wing on the dead engine side, a rolling moment also develops about the longitudinal axis in the direction of the dead engine.

  • The typical action is to apply rudder in the direction of the live engine to counteract this forward slip. However, while the nose will be aligned with the desired flight path doing this, the actual flight path is a side slip towards the dead engine side, which creates excess drag.
    The only available counter to this is to bank the airplane into the direction of the live engine to counteract the rudder force using the horizontal component of lift. The angle of bank must not exceed 5°, to prevent excessive loss of vertical lift component.

Your Notes (not visible to others)

This question has appeared on the real examination, you can find the related countries below.