Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
October 4, 2025
Submitted
November 12, 2025
Operation
Air carrier
Aircraft
N908WN
Make and model
Boeing 7377H4
Aircraft serial
36620
Aircraft time
57,712 hours, 34,815 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

CUSTOMER REQUEST: PERFORM DETAIL VISUAL INSPECTION ON BS 540 BULKHEAD VERTICAL STIFFENERS BTW RBL 54.60 TO LBL 54.60 AT FWD CARGO COMPARTMENT. PERFORMED DETAILED VISUAL INSPECTION ON BS 540 BULKHEAD VERTICAL STIFFENERS BTW RBL 54.60 TO LBL 54.60 AT FWD CARGO COMPARTMENT AND FOUND CRACK ON VERTICAL STIFFENER LOCATED RBL 24.97 BS 540 SEE TTG8Q015JRAB AND VERTICAL STIFFENER LOCATED LBL 24.97 BS 540 SEE TTG8Q015JBVJ I.AW B737-700 SRM 51-10-04-0G-0.

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