SDR SWAA2026092869158

Service difficulty report · Intercostal · Boeing 7378H4

Difficulty date: August 25, 2026
Submitted: September 29, 2026
Operation: Air carrier
Aircraft: N8643A
Make and model: Boeing 7378H4
Aircraft serial: 42524
Aircraft time: 39,924 hours, 19,432 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
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

FWD CARGO BAY, CORROSION AT INTERCOSTAL BTW BS 500C TO 500D LBL24, (MARKED) FCB CORROSION AT INTERCOSTAL BTW BS 500C TO 500D LBL24 (MARKED) REMOVED AND REPLACED FCB INTERCOSTAL AT STA 500C TO 500D LBL24 WL156 IAW SRM 51-40-02 AND DWG: 143A7505 ID: 0137 REV: - VERIFIED ITEM 1

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