What is the maximum engine temperature allowed transiently?

The maximum engine temperature allowed transiently is 870ºC. This temperature limit is set to ensure the safe operation of the engine during short bursts of high performance, such as during takeoff or when rapidly accelerating. Exceeding this temperature for extended periods can result in overheating, leading to potential engine damage or failure. The specification for this transient limit acknowledges that engines can handle higher temperatures for brief times without sustaining permanent damage, making 870ºC the upper limit within which the engine can operate safely during those critical moments. Understanding these limits is crucial for pilots and maintenance personnel to ensure both peak performance and the longevity of the engine.