Multi-Engine Rating

  1. What is a Critical Engine
    This engine would most adversely affect the performance of the airplane if it were to fail.
  2. Vmc
    minimum controllable airspeed, minimum speed at which the aircraft is directionally controllable
    Critical Engine Failed, Operating Engine Takeoff Power, Most Unfavorable Weight, Bank less than 5 degrees, Aft CG, Takeoff Configuration, Sea level conditions, Ground Effect, Gear Up
  4. Critical Engine Failed Factors Affecting Airplane
    Torque, P-Factor, Accelerated Slipstream, Spiraling Slipstream
  5. Critical Engine Failed Torque Factor
    Due to the direction of rotation of the props a yawing tendency occurs when the left engine fails, making it the critical engine
  6. Critical Engine Failed P-factor
    Operating right-hand engine will produce a more severe yaw towards the dead engine due to the direction of rotation of the props. More "bite" from downward blade which is further from the center of the aircraft.
  7. Critical Engine Accelerated Slip Stream
    Due to accelerated air over the wing it causes greater lift and a rolling tendency.
  8. Critical Engine Spiraling Slipstream
    Left Engine Critical, The airflow from the left engine is moving around the aircraft and pushing on the rudder causing a yaw to the left. Right engine has no effect.
  9. Most Unfavorable Weight Factor
    Light is unfavorable. An increase in weight causes Vmc to decrease because of the greater horizontal component of lift. With a greater horizontal component of lift (max 5 degrees) less rudder is required thus decreasing Vmc.
  10. Critical Engine Factor Bank up to 5 Degrees
Card Set
Multi-Engine Rating
Multi-Engine Rating