Service difficulty report · Bulkhead · Boeing 747212B

Difficulty date
December 23, 2007
Submitted
January 15, 2008
Operation
Air carrier
Aircraft
N526UP
Make and model
Boeing 747212B
Aircraft serial
21937
Aircraft time
92,930 hours, 17,404 cycles
Part
Bulkhead
Part number
65B903162
Condition
Chafed
Location
Nr 1 Pylon
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

DURING B-CHECK WHILE ACCOMPLISHING AD 2007-19-19, NR 1 PYLON STRUT FORWARD ENGINE MOUNT BULKHEAD CORD WAS FOUND WITH CHAFED RADIUS AT LOWER INBOARD END. FABRICATED AND INSTALLED REPAIR ANGLE IAW BOEING SKETCH SR1-733824930-1. THIS REPAIR IS TEMPORARY AND REQUIRES A REPEAT DETAILED VISUAL INSPECTION EVERY 30 DAYS OR 60 CYCLES, WHICH EVER OCCURS FIRST. PERMANENT REPAIR MUST BE ACCOMPLISHED BY APRIL 30TH 2008, WITH REPLACEMENT OF BULKHEAD CORD.

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