Service difficulty report · Stiffener · Boeing 76734AF

Difficulty date
January 12, 2012
Submitted
January 18, 2012
Operation
Air carrier
Aircraft
N329UP
Make and model
Boeing 76734AF
Aircraft serial
27755
Aircraft time
37,585 hours, 11,091 cycles
Part
Stiffener
Part number
111T20058
Condition
Cracked
Location
Wg Center Tank
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:C, WING CENTER TANK FRONT SPAR VERTICAL STIFFENER TOP AREA FOUND CRACK JUST AT STA 785.9 RBL 10.94. STIFFENER REPAIRED IAW SRM 57-10-10-2R2 REPAIR 2, FIG 201, REV 52. JUST AT STA 785.9, RBL 10.94, ORG MATL IS BAC1518-912-2024T3511, CRACK LENGTH 3.10" CUT OFF LENGTH 19.5", THIS CLASSIFIED AS MAJOR REPAIR WITH MAT'L BAC1518-912-7075T6511 AS REPAIR STIFFENER SECTION CLAD 2024T3-0100IN AS REPAIR STRAP, TOTAL REPAIR LENGTH IS 26"

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