SDR SWAA2026031669623

Service difficulty report · Nut Plate · Boeing 7378H4

Difficulty date: February 10, 2026
Submitted: March 16, 2026
Operation: Air carrier
Aircraft: N8629A
Make and model: Boeing 7378H4
Aircraft serial: 36897
Aircraft time: 39,626 hours, 19,347 cycles
System (JASC): 5740 · Wing, Attach Fittings
Part: Nut Plate
Condition: Corroded
Location: Zone 500
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 PLATE INTERNAL CAVITY LEADING EDGE LOCATED OFSS421 AT LT WING. REPLACED RAIL NUT PLATE INTERNAL CAVITY LEADING EDGE LOCATED OFSS421 AT LT WING IAW SRM 51-40-02-0G, SRM 51-10-02-0G, ITEM 9, AND DWG 112A4402, SHEET 40, REV A, AND PERFORMED GENERAL VISUAL INSPECTION AND AREA DID NOT FIND MORE DAMAGE.

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