Service difficulty report · Web · Boeing 73771B

Difficulty date
October 21, 2022
Submitted
November 14, 2022
Operation
Air carrier
Aircraft
N7854B
Make and model
Boeing 73771B
Aircraft serial
29372
Aircraft time
45,663 hours, 30,470 cycles
Part
Web
Condition
Corroded
Location
Fwd Cargo
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 SUB THRESHOLD WEB AT FWD CARGO BAY BS456 - BS490 RBL28. / REMOVED CORROSION FROM FCB SUB THRESHOLD WEB AT RBL 28; BS 456 TO BS 457. AFTER BLEND OUT AREA; DIMENSIONS: L= 2.00'; W= 1.00'; D= 0.015'; ORIGINAL THICKNESS: 0.045'; AND IS FOUND OUT OF LIMITS IAW SRM 53-30-15-1A-1; PARG. 4.G.(2); DETAIL GRECEIVED NEW WEB FROM STORES; REF PO 878771. LOCATED AND DRILLED NEW WEB IAW SRM 51-40-05-0G-0 AND DWG 143A8330; DWG 143A8120. INSTALLED NUT PLATES IAW SRM 51-40-02-0G-0.

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