Which of the following factors would NOT prevent an engine restart attempt?

An emergency landing procedure represents a planned and structured response to an unforeseen situation, such as engine failure or imminent danger, and is designed to prioritize safety. This procedure focuses on the proper actions to take in the event of an emergency, which may include safely landing the aircraft even if it cannot restart the engine.

In contrast, factors such as fuel contamination, cooling failure, and frozen conditions could critically impair engine function, making safe restart attempts unfeasible. Fuel contamination can lead to engine performance issues, cooling failure can cause the engine to overheat, and frozen conditions can create physical barriers to restarting the engine. Each of these scenarios directly impacts the engine’s ability to function and restart, whereas an emergency landing procedure serves as a remedial action, not as a hindrance to restarting attempts.