Service difficulty report · Frame · Boeing 747451

Difficulty date
May 27, 2012
Submitted
May 29, 2012
Operation
Air carrier
Aircraft
N665US
Make and model
Boeing 747451
Aircraft serial
23820
Aircraft time
96,421 hours, 12,004 cycles
Part
Frame
Condition
Cracked
Location
Bs 1180
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 INSPECTION, FOUND CABIN UPPER LOBE TENSION TIES AREA BS 1180 STRINGER-9L, FOUND FRAME WEB AT STRINGER CUTOUT CRACKED. MAINTENANCE REMOVED CRACKED FRAME DOUBLER AND FABRICATED NEW DOUBLER PER P/N: 65B26275-3 AS PER DWG65B26275. REFER TO SMALL CONTROL NR PO236369. NEW FABRICATED DOUBLER HOLES PICKED UP AS PER B747-400 SRM 51-40-05 AND INSTALLED AS PER SRM 53-40-07, REPAIR 4 FIG 201 AND 51-40-02.