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RPM ROLLBACK


sharif101
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Can you give us more information about what the engine instruments are doing, before and after rollback?

Torque

TIT

Fuel Flow

RPM

Without more information, I would suspect the valve housing is biting too much air in the flight range, causing RPM to drop and the fuel control to go into acceleration mode, making TIT shoot up. Changing the Valvehousing is my shoot-from-the-hip recommendation. Please let us know what you find.

*Edit* Might want to check the NTS gap too.

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