Service difficulty report · Bolt · Boeing 747428

Difficulty date
March 14, 2013
Submitted
March 14, 2013
Operation
Air carrier
Aircraft
N952CA
Make and model
Boeing 747428
Aircraft serial
25238
Aircraft time
83,570 hours, 11,715 cycles
Part
Bolt
Condition
Backed Out
Location
Sequence Valve
Stage of operation
AP
How discovered
O
Nature of condition
S
Precautionary procedure
O

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

What was found

GEAR DISAGREE AND GEAR DOOR EICAS RT BODY GEAR UNSAFE INDICATION ON LANDING. ALTERNATE GEAR EXTENSION METHOD PERFORMED AND ALL LIGHTS GREEEN. FOUND MLG DOOR SEQUENCE VALVE CARRIER BOLT FALLEN OUT. NUT MISSING. REPLACED HARDWARE WITH NEW LOCKING NUT.