Service difficulty report · Support · Boeing 7377H4

Difficulty date
July 1, 2026
Submitted
July 25, 2026
Operation
Air carrier
Aircraft
N485WN
Make and model
Boeing 7377H4
Aircraft serial
32473
Aircraft time
71,955 hours, 43,342 cycles
Part
Support
Condition
Corroded
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

CORROSION LOWER SILL LOCATED BETWEEN BS794 TO BS847 AT LEVEL STR26R , WL152.7 AFT CARGO BAY. REPLACED LOWER SILL LOCATED BETWEEN BS794 TO BS847 AT LEVEL STR26R WL152.7 AFT CARGO BAY IAW SRM 51-40-02 SRM 51-10-02 ITEM 9 AND DWG 146A8340 SHEET: 21 REV -.

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