FAA Powerplant Written Practice Test

What is a critical consideration when storing engines in relation to humidity?

1. Humidity must be monitored regularly

2. Humidity should be eliminated to prevent corrosion

3. Humidity should be maintained at a certain level for engine performance

4. Humidity has no effect on engine storage

The correct answer is: Humidity should be eliminated to prevent corrosion

When considering the storage of engines, one of the primary concerns is the risk of corrosion, which can be exacerbated by high humidity levels. High humidity can lead to moisture accumulation on metal surfaces, which promotes the formation of rust and other forms of corrosion. Corrosion can significantly impact the structural integrity and performance of engine components, leading to costly repairs or even engine failure. Therefore, it is essential to maintain a dry environment or actively eliminate humidity when storing engines to protect them from these detrimental effects. This includes using desiccants, ensuring proper ventilation, or employing dehumidifiers in storage areas. By taking these measures to reduce humidity, the lifespan and reliability of the engine can be preserved, ensuring that it remains in optimal condition for future use.