Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
June 8, 2026
Submitted
July 6, 2026
Operation
Air carrier
Aircraft
N480WN
Make and model
Boeing 7377H4
Aircraft serial
33998
Aircraft time
72,332 hours, 43,302 cycles
Part
Stiffener
Condition
Cracked
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

CRACKED STIFFENER, BS 540 BTWN BL 0 TO LBL 24.75. REPLACED THE STIFFENER IAW SRM 51-40-02-0G-0, AND DWG 143A0060, SHEET 36, REV A.

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