In the event of an engine failure during takeoff run, what is the correct procedure regarding the ignition switch?

During an engine failure on the takeoff roll, the proper action regarding the ignition switch is to turn it off. This procedure is crucial for safety reasons. If there is an engine failure, particularly right after takeoff, the objective is to prevent potential post-crash fire and to ensure that fuel is not being fed into a non-functioning engine that could ignite or create more hazards.

Turning off the ignition switch effectively stops the flow of electricity to the engine, which helps reduce the risk of a fire. Additionally, it aligns with the actions that should follow in dealing with engine failure during takeoff—particularly focusing on maintaining control of the aircraft and, if necessary, preparing for a safe landing.

Keeping the ignition on would not be advisable because it could lead to unnecessary risks in case of a fire or explosion in the event of a crash landing. Turning it to start or resetting it would not provide any benefit since the engine is already at failure, and these actions do not address the critical need to mitigate fire hazards.