SDR IPXA2672604

Service difficulty report · Stiffener · Boeing 76734AF

Difficulty date: March 18, 2012
Submitted: March 28, 2012
Operation: Air carrier
Aircraft: N317UP
Make and model: Boeing 76734AF
Aircraft serial: 27745
Aircraft time: 41,512 hours, 12,886 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Part number: 111T20058
Condition: Cracked
Location: Wing Ctr 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. REPAIRED IAW SRM 57-10-10-2R2, REPAIR 2, FIG 201, REV 52 AT STA 785.9, RBL 10.94, ORG MATL IS BAC1518-912-2024T3511, CRACK LENGTH IS 2.5", CUTOFF LENGTH 19.5", MAJOR REPAIR WITH MATL BAC1518-912-7075T6511 AS REPAIR STIFFENER SECTION AND CLAD 2024T3-01001N AS REPAIR STRAPS, TOTAL REPAIR LENGTH IS 26".

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