Engine Failure During Takeoff Before Vmc


To determine that the member exhibits satisfactory knowledge, risk management, and skills associated with associated with an engine failure during takeoff before Vmc.


This is the required reading for this lesson. Numbers in [brackets] indicate the starting and ending page in the referenced reading material. Read all the pages and sections referenced.


The notes below highlight the important parts in the referenced material. Reading the notes without having read the actual referenced material is generally not sufficient to pass the written exam!

  • Vmc - Minimum control speed with the critical engine inoperative-marked with a red radial line on most airspeed indicators.
  • If one engine fails before reaching Vmc the takeoff must be aborted!
  • Once the decision to reject a takeoff is made, the pilot should promptly close both throttles and maintain directional control with the rudder, nosewheel steering, and brakes.
    • Aggressive use of rudder, nosewheel steering, and brakes may be required to keep the airplane on the runway.
  • The primary objective is not necessarily to stop the airplane in the shortest distance, but to maintain control of the airplane as it decelerates.

Sim Pilot Notes

These notes highlight the differences between simulator and real-world flying. These differences are most often due to simulator limitations or specific VATSIM rules.

  • For this task it is a requirement to fail one engine on the aircraft. This can usually be accomplished in one of the following ways:
    • Turn off fuel to one engine - assuming that cross feed is not on
    • Set mixture to zero on the engine to be failed
    • Put throttle to idle on the engine to be failed
  • In X-Plane it is possible to set failures at a specific speed - Use this feature to fail the engine at Vmc-10 knots
  • It other sims it is possible to fail an engine after a certain amount of time.

Tomas Hansson (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Chief Flight Instructor, VATSTAR
DISCLAIMER: all information contained herein is for flight simulation purposes only.
March 2021

Click to listen highlighted text! Powered By GSpeech