What is the proper action if an engine does not start and fire continues during a start attempt?

When an engine does not start and there is a continuous fire during the start attempt, the proper action is to discontinue the start attempt and use a fire extinguisher. This response is critical for safety reasons. If a fire has ignited during an engine start, continuing to crank the engine could exacerbate the situation, as fuel may continue to flow into the engine, increasing the risk of the fire spreading or causing an explosion.

Utilizing a fire extinguisher immediately helps to extinguish the flames and mitigate any damage to the aircraft, as well as protects personnel in the vicinity. Proper training emphasizes the need for prompt action to extinguish fires and manage emergency situations effectively, focusing on safety first.

Other choices such as attempting to restart the engine or keeping it cranking pose significant risks and do not address the immediate danger of fire. Pushing the aircraft away from the fire area could be dangerous if the situation is not assessed properly, and it might also hinder firefighting efforts. The most prudent course of action is to act decisively with a fire extinguisher to neutralize the threat.