When is the Emergency Lubrication System utilized?

The Emergency Lubrication System is utilized specifically during a primary system failure. This system is designed to ensure that critical components maintain lubrication in the event of a main lubrication system’s failure, thus protecting against overheating and catastrophic damage to the engine or associated mechanical structures. The primary objective is to provide a backup to ensure continued operation of essential systems when the regular lubrication fails, enhancing safety and operational reliability.

In contrast, the other scenarios listed do not necessitate the use of the Emergency Lubrication System. Routine checks and maintenance focus on ensuring systems are operational and addressing potential issues before they become failures, thus do not require the emergency backup. Additionally, while turbulence may affect flight stability, it does not directly trigger the need for emergency lubrication, as the primary concern there involves handling the aircraft rather than addressing lubrication issues.