Service difficulty report · Bushing · Beech C90A

Difficulty date
March 25, 2003
Submitted
April 14, 2003
Operation
General aviation
Make and model
Beech C90A
Aircraft time
3,060 hours
Engine
Pwa PT6A21
Part
Bushing
Part number
906100105
Condition
Seized
Location
Control Rod
Component
Elevator Trim · Raythn
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) BUSHING INSERTED INTO ELEVATOR TRIM TAB HORNS, BOTH LT AND RT FOUND TO BE INCORRECTLY INSTALLED. BUSHING WAS NOT INSERTED FAR ENOUGH INTO THE HORN. THIS CAUSED THE CLEVIS FORK END TO CLAMP THE OUTER BUSHING AND HORN TAB INSTEAD OF THE INNER BUSHING. THE INNER BUSHING HAD TO BE DRIVEN OUT WITH A HAMMER AND PUNCH. ONCE REMOVED AND MEASURED, THE INNER BUSHING DIMENSION WAS FOUND TO BE THE SAME SIZE AS THE OUTER BUSHING. THIS LEAVES A ZERO CLEARANCE FIT WHICH DOESNOT ALLOW A FREE BEARING MOVEMENT.

More about the Beech C90A