SDR SWAA2026072727275

Service difficulty report · Sidewall Support · Boeing 7378H4

Difficulty date: June 23, 2026
Submitted: July 28, 2026
Operation: Air carrier
Aircraft: N8647A
Make and model: Boeing 7378H4
Aircraft serial: 42528
Aircraft time: 39,657 hours, 19,343 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

CORROSION ON LH FLOOR SIDEWALL SUPPORT AT FCB WL153 BS500C+11; +16; +17. REMOVED AND REPLACED FCB FLOOR TO SIDEWALL SUPPORT FROM BS 400 TO BS 500I AND SPLICE LBL 23 WL 153 IAW SRM 51-40-02, DWG 143A7500 ID:0095, REV -, SRM 53-00-53-2R-6 REPAIR 6, AND TASK M-22-153-01550.

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