Definition
A condition in which a turbine engine's internal temperature exceeds the manufacturer's published limits, either in magnitude or duration, during start, acceleration, or steady operation. An over temperature event can damage hot-section components such as turbine blades and combustion liners, and typically requires inspection or maintenance action before further flight.
Plain English
The engine got hotter than it is allowed to get. Even a brief excursion above the limit can damage parts inside the engine and usually means a maintenance check is required before flying again.
Context Anchor
Seen in engine operation, especially during engine start, climb, high-power operation, or any time a temperature gauge approaches or enters a limit range.
Why Pilots Care
Continued operation can damage engine components and force an immediate power reduction or emergency landing.
Grounding Statement
If a temperature indication moves past the allowed range, treat it as a limit problem, not just as normal heating.
Intuition Check
Do not read this as simply “the engine is warm.” In this context, it means the temperature has exceeded a stated limit, or is about to unless the pilot corrects it.
Example Sentence 1
During the hot start, the EGT briefly exceeded the limit, creating an over temperature condition that had to be logged and inspected before the next flight.
Example Sentence 2
After an aborted start the checklist required checking for any over temperature condition before attempting another engine start.