Service difficulty report · Bolt · Boeing 747422

Difficulty date
March 15, 2003
Submitted
April 15, 2003
Operation
Air carrier
Aircraft
N180UA
Make and model
Boeing 747422
Aircraft serial
25224
Aircraft time
52,397 hours, 6,487 cycles
Engine
Pwa PW4056
Part
Bolt
Part number
NAS6304
Condition
Missing
Location
Aileron
Part time
52,398 hours, 6,487 cycles
Stage of operation
CL
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

EXCESSIVE AILERON TRIM, 1.5 UNITS, REQUIRED TO MAINTAIN LEVEL FLIGHT. INVESTIGATION FOUND LEFT INBOARD AILERON POWER CONTROL PACKAGE INPUT CONTROL ROD WAS DETACHED AT ONE END. BOLT, NUT & WASHER ON PCP END OF ROD WERE MISSING AND REPLACED BEFORE RETURN TO SERVICE. NO FURTHER DAMAGE OR MISSING HARDWARE WAS DETECTED.