SDR SWAA2026091061287

Service difficulty report · Sidewall Support · Boeing 7377H4

Difficulty date: August 5, 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
System (JASC): 5320 · Fuselage Miscellaneous Structure
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

AFT CARGO BAY RIGHT FLOOR TO SIDEWALL SUPPORT HAS CORROSION BS 747+17, RBL 21, WL 156. EVALUATED CORROSION REMOVED 0.015" IN AN AREA OF 1"X1" ORIGINAL THICKNESS 0.040", FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2. REMOVED AND REPLACED AFT CARGO BAY RT FLOOR TO SIDEWALL SUPPORT BS 727+4 - 767, RBL 21, WL 156 IAW SRM 51-40-02-0G-0 AND DWG 146A7500 REV-.

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