Service difficulty report · Bellcrank · Beech C90A

Difficulty date
April 10, 2002
Submitted
April 26, 2002
Operation
General aviation
Make and model
Beech C90A
Aircraft time
5,049 hours
Engine
Pwa PT6A21
Part
Bellcrank
Part number
ASABOVE
Condition
Mismanufactured
Location
Aileron
Stage of operation
IN
How discovered
V
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) DURING INSPECTION THAT REQUIRED REMOVAL IT WAS NOTICED THAT THE HOLE IN THE OUTPUT ARM (AILERON PUSHROD ATTACH POINT) HAD BEEN INCORRECTLY DRILLED TO 5/16 INCH INSTEAD OF 1/4 INCH. THIS ALLOWED LOST MOTION BETWEEN THE PUSHROD AND BELLCRANK. THE BORE OF THE HOLE SHOWED PRIMER EXISTING FROM MANUFACTURE. MANUFACTURER WAS CONTACTED AND WILL BE SHOWN THE DEFECT AND IT WAS HINTED THAT THIS PROBLEM HAD BEEN SEEN BEFORE.

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