SDR DALA2016041502946

Service difficulty report · Stiffener · Boeing 75726D

Difficulty date: April 14, 2016
Submitted: April 15, 2016
Operation: Air carrier
Aircraft: N762BC
Make and model: Boeing 75726D
Aircraft serial: 33966
Aircraft time: 28,319 hours, 16,502 cycles
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Stiffener
Condition: Corroded
Location: Bs 900 Bulkhead
Stage of operation: IN
How discovered: 9
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

CORROSION ON BULKHEAD STIFFENER LOWER SIDE BS 900, RBL 10. REMOVED CORROSION ON STIFFENER AT LOWER SIDE BS 900, RBL 7.5 ORIGINAL THICKNESS IS .180", MATERIAL LOSS WAS .038 WHICH WAS OUT OF LIMITS IAW SRM 51-10-10 ALLOWABLE DAMAGE, PG 103, FIG 101, DETAIL V. R & R WITH NEW STIFFENER, PN 111N2020-7 IAW SRM 51-40-02 PG 1-5 AND REF DWG 111N2001.

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