# SDR SWAA2026012652976

- 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): [5740 · Wing, Attach Fittings](https://openairdocs.org/jasc/5740)
- Part: Nut Plate
- Condition: Corroded
- Location: Zone 600
- 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/SWAA2026012652976

## Discrepancy

CORRODED OTBD FRONT SPAR RAIL NUT PLATE,  BETWEEN OFSS 297 - OFSS 301, RT WING.  REPLACED THE NUT PLATE IAW SRM 51-10-02-0G, ITEM 9,  SRM 51-40-02-0G, & DWG 112A4402, SHEET 40, REV A. EVALUATED CORROSION ON RAIL NUT PLATE AND NOT FOUND ALLOWABLE DAMAGE FOR CORROSION ON SRM B737-800 AND PERFORMED GENERAL VISUAL INSPECTION AND NOT FOUND MORE DAMAGE ON ADJACENT AREA. MEASUREMENT OF CORROSION: L: 0.556, W: 0.405,

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