SDR SWAA2026031369057

Service difficulty report · Rail · Boeing 7378H4

Difficulty date: February 9, 2026
Submitted: March 13, 2026
Operation: Air carrier
Aircraft: N8629A
Make and model: Boeing 7378H4
Aircraft serial: 36897
Aircraft time: 39,626 hours, 19,347 cycles
System (JASC): 5720 · Wing Miscellaneous Structure
Part: Rail
Condition: Corroded
Location: Zone 600
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 RAIL NUT PLATES INTERNAL CAVITY LEADING EDGE LOCATED OFSS571 AT RT WING. RE-INSTALLED RAIL NUT PLATES INTERNAL CAVITY LEADING EDGE IAW SRM 51-40-02, & DWG 112A4402, SHEET 41, REV A. & PERFORMED GENERAL VISUAL INSPECTION ON AREA AND NO CORROSION DAMAGE FOUND. AND FOUND PRIMER DETERIORATED ON RIAL NUT PLATES IAW SRM 51-10-02.

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