Service difficulty report · Stiffener · Boeing 76734AF

Difficulty date
July 17, 2012
Submitted
July 25, 2012
Operation
Air carrier
Aircraft
N331UP
Make and model
Boeing 76734AF
Aircraft serial
27757
Aircraft time
38,027 hours, 11,432 cycles
Part
Stiffener
Part number
141T514631
Condition
Cracked
Location
Bs 246
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

INSPECTION TYPE: 7C, FUSELAGE MAIN EQUIPMENT CENTER STA 246 LBL 40 FLOORBEAM FWD FACE STIFFENER FOUND CRACKED. REPAIRED IAW SRM 53-10-51-2R4, REPAIR 4, FIG 201, REV 52, ORIG MATL IS BAC1490-2793-7075T62, CRACK LENGTH: 1.1", WITH MATERIAL CLAD 7075T6-0063" AS REPAIR STIFFENER, CLAD 7075T6-0080" AS REPAIR DOUBLER & BAC1512-3347- 7075T6511 AS REPAIR FILLERS, REPEAT INSP AT 3,000 FLIGHT CYC OR 24 MONTHS WHICH EVER OCCURS FIRST IS REQUIRED IAW SRM 53-10-51-2R4.

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