Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
October 31, 2025
Submitted
December 1, 2025
Operation
Air carrier
Aircraft
N234WN
Make and model
Boeing 7377H4
Aircraft serial
32502
Aircraft time
64,044 hours, 38,686 cycles
Part
Intercostal
Condition
Corroded
Location
Zone 200
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

CORRODED INTERCOSTAL FL SEAL, BS 1016, BETWEEN LBL10 - LBL 8.39. REPLACED INTERCOSTAL FL SEAL AND FASTENERS IAW SRM 51-40-02, SRM 51-10-02, AND DWG 148A0922, SHEET 20, REV -.

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