SDR SWAA2021100116946

Service difficulty report · Web · Boeing 7377BD

Difficulty date: September 11, 2021
Submitted: October 1, 2021
Operation: Air carrier
Aircraft: N7751A
Make and model: Boeing 7377BD
Aircraft serial: 36717
Aircraft time: 43,609 hours, 22,223 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Web
Part number: 143A812210
Condition: Corroded
Location: Fwd Cargo Bay
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 SUBTHRESHOLD WEB IN FWD CARGO BAY BS 447 - 480, RBL 28, WL 156. REMOVED CORROSION IAW SRM 53-30-15-0I-1, FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15-1A-1 ALLOWABLE DAMAGE 1 PARAG.4.G.(2), DETAIL G, FIG 103. LOCATED AND DRILLED A NEW SUB THRESHOLD IAW SRM 51-40-05-0G-0. INSTALLED THE NEW SUB THRESHOLD WEB IAW SRM 51-40-02-0G-0 DWG 143A8330.

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