Service difficulty report · Bushing · Beech C90

Difficulty date
March 25, 2003
Submitted
April 14, 2003
Operation
General aviation
Make and model
Beech C90
Aircraft time
7,977 hours
Engine
Pwa PT6A21
Part
Bushing
Part number
905240241
Condition
Seized
Location
Elevator Trim
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

(CAN) LT & RT ELEVATOR TRIM HORN INNER BUSHINGS HAD TO BE DRIVEN OUT OF INNER BUSHINGS WITH HAMMER AND PUNCH. ONCE REMOVED & MEASURED, INNER BUSHING DIMENSION WAS FOUND TO BE THE SAME AS OUTER BUSHING INNER DIAMETER. THERE WAS NO CORROSION BETWEEN THE 2 BUSHINGS. THIS LEFT A 0 CLEARANCE FIT NOT ALLOWING FREE BEARING MOVEMENT. NEW OUTER & INNER BUSHINGS WERE RECEIVED. NEW OUTER BUSHINGS HAVE A MEASURED INNER DIAMETER .3735. REMOVED OUTER BUSHING. ID WAS MEASURED AT .3750. BUSHINGS HAVE BEEN INSTALLED IN ELEVATOR TRIM HORN & INNER BUSHING NOW FREELY ROTATE WITHIN OUTER BUSHING. LT BUSHING LOCATED IN END OF THE ELEVATOR TRIM TAB ACTUATOR ALSO REQUIRED FORCEFUL REMOVAL DUE TO CORROSION. RT SLID OUT FREELY.

More about the Beech C90