Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
October 5, 2025
Submitted
November 12, 2025
Operation
Air carrier
Aircraft
N908WN
Make and model
Boeing 7377H4
Aircraft serial
36620
Aircraft time
57,715 hours, 34,816 cycles
Part
Stiffener
Condition
Cracked
Location
Zone 100
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

CRACK ON VERTICAL STIFFENER BS 540 AND RBL 24.97 BULKHEAD AREA FWD CARGO COMPARTMENT. REPLACED VERTICAL STIFFENER BS 540 AND RBL 24.97 BULKHEAD AREA FWD CARGO COMPARTMENT IAW B737-700 SRM 51-40-02; SRM 51-10-02 AND DRAWING 111A2001 SHEET 76;77;78 REV- AND DRAWING 111A2000 SHEET 37 REV -.

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