Service difficulty report · Throttle · Cessna 525A

Difficulty date
December 3, 2025
Submitted
December 4, 2025
Operation
Air carrier
Aircraft
N525MA
Make and model
Cessna 525A
Aircraft serial
525A0012
Aircraft time
6,479 hours, 5,502 cycles
System (JASC)
7603 · Power Lever
Part
Throttle
Part number
636580110
Condition
Dirty
Location
Cockpit
Part time
6,479 hours
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CRUISE FLIGHT LEFT ENGINE THROTTLE STUCK AT 95% N2 WITH NO ABILITY TO ADJUST. LEFT ENGINE THROTTLE CUTOFF ALSO LOCKED IN ON POSITION. PILOTS WERE ABLE TO FREE THE ENGINE CONTROL AND MANIPULATE POWER AS REQUIRED. UPON INSPECTION OF THE AIRCRAFT AT KMDT IT WAS NOTED THAT THE LEFT ENGINE THROTTLE CONTROL WAS NOTCHY/STIFF. WE WERE ABLE TO CLEAN THE FRICTION CONTROL SUBASSEMBLY AND THE LEFT THROTTLE RETURNED TO SMOOTH OPERATION.

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