Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date
January 19, 2026
Submitted
February 5, 2026
Operation
Air carrier
Aircraft
N947WN
Make and model
Boeing 7377H4
Aircraft serial
36924
Aircraft time
50,403 hours, 30,825 cycles
Part
Sidewall 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 FOUND ON THE FWD CARGO BAY FLOOR TO SIDE WAL SUPPORT, BS 460 - 500D, LBL 22, WL 155. REMOVED CORROSION ON THE SIDEWALL SUPPORT BS 460 MEASUREMENT: L 1.9, W 0.9, & BS 500A, L 1.7, W 1.2, MAT. LOSS 0.025'. REMAINING THICKNESS 0.015'. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2, FIG. 103, DETAIL C. MATERIAL LOSS IS MORE THAN 10 PERCENT. REMOVED & REPLACED THE FLOOR TO SIDEWALL SUPPORT BS 396 - 500D, LBL 24, IAW SRM 51-40-02 AND DWG 143A7500, REV -.

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