Service difficulty report · Stiffener · Boeing 7377CT

Difficulty date
June 6, 2026
Submitted
July 22, 2026
Operation
Air carrier
Aircraft
N569WN
Make and model
Boeing 7377CT
Aircraft serial
33656
Aircraft time
76,819 hours, 40,943 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

CENTER FUEL TANK VERTICAL STIFFENER IS CRACKED. BS 540, LBL 24 ON THE TOP 6 INCHES BELOW THE BOTTOM OF THE CABIN FLOOR PANEL. REF TTG8Q01CKAZ4. REMOVED AND REPLACED LBL 24.97 VERTICAL STIFFENER IAW EA 26-157-01545.

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