Service difficulty report · Shear Web · Boeing 7377H4

Difficulty date
August 6, 2026
Submitted
September 11, 2026
Operation
Air carrier
Aircraft
N931WN
Make and model
Boeing 7377H4
Aircraft serial
36637
Aircraft time
56,214 hours, 34,452 cycles
Part
Shear Web
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

CORROSION FOUND ON TOP AFT (WET AREA) FLOOR STRUCTURE AT LBL 36 BS 1002 WL 208. REMOVED AND REPLACED L/H SHEAR WEB FROM BS986-BS1016 LBL34-LBL42 WL 208 RECORD ON CCN TTG8Q01DKS16 DUE TO OUT LIMIT STATEMENT THEREFORE CORROSION FOUND ON TOP AFT (WET AREA) FLOOR STRUCTURE AT LBL 36 BS 1002 WL 208 TO BE RESOLVED ON OTHER FAULT CORRECTIVE ACTION 1

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