# SDR SWAA2026012653102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2025
- Submitted: January 26, 2026
- Operation: Air carrier
- Aircraft: N8627B
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36895
- Aircraft time: 39,437 hours, 19,261 cycles
- System (JASC): [5340 · Fuselage Main, Attach Fittings](https://openairdocs.org/jasc/5340)
- Part: Nut Plate
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026012653102

## Discrepancy

CORROSION ON THE OTBD FRONT SPAR RAIL NUT PLATE,  BETWEEN OFSS 430 TO OFSS 444,  RT WING.   REPLACED THE OTBD FRONT SPAR RAIL NUT PLATE IAW SRM 51-10-02-0G, ITEM 9, SRM 51-40-02-0G, & DWG 112A4402, SHEET 40, REV A. EVALUATED CORROSION ON THE RAIL NUT PLATE AND NOT FOUND ALLOWABLE DAMAGE FOR CORROSION IN SRM & PERFORMED GENERAL VISUAL INSPECTION AND NO MORE DAMAGE ON ADJACENT AREA. MEASURE OF CORROSION, L: 0.772, W: 0.406.

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