What is a potential consequence of continuous APU operation without maintenance?

Continuous operation of the Auxiliary Power Unit (APU) without proper maintenance can lead to extended wear on its components. The APU is subject to various stresses during operation, including heat, vibration, and operational loads. Over time, these factors can contribute to fatigue and degradation of critical components such as bearings, gears, and electrical systems.

Regular maintenance is essential to replace worn parts, lubricate moving components, and perform inspections. Failing to maintain the APU can result in accumulated damage that may compromise its reliability and efficiency. Ultimately, this could lead to APU failure, increased downtime for repairs, and potentially impact the overall mission capability of the aircraft. Therefore, understanding the necessity of routine maintenance in prolonging the service life and functionality of the APU is vital for anyone involved in aircraft operations and maintenance.