# SDR SWAA2025060666779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2025
- Submitted: June 6, 2025
- Operation: Air carrier
- Aircraft: [N222WN](https://openairdocs.org/aircraft/N222WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34290
- Aircraft time: 64,101 hours, 38,519 cycles
- System (JASC): [5754 · Leading Edge Devices](https://openairdocs.org/jasc/5754)
- Part: Rail
- Condition: Corroded
- Location: Zone 500
- 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/SWAA2025060666779

## Discrepancy

CORROSION ON RAIL NUT PLATES LOCATED OFSS288 INTERNAL CAVITY LEADING EDGE AT LT WING 2025-291144 <[01]. REMOVED RAIL NUT PLATES LOCATED OFSS288 INTERNAL CAVITY LEADING EDGE AT LT WING IAW B737-700 SRM 51-40-02; DUE TO NOT FOUND ALLOWABLE DAMAGE ON SRM 57-41-02-1A-2 MUST BE REPLACED AND PERFORMED VISUAL INSPECTION AND NOT FOUND ADDITIONAL DAMAGE AFTER REMOVAL PART. REPLACED RAIL NUT PLATES LOCATED OFSS288 INTERNAL CAVITY LEADING EDGE AT LT WING IAW B737-700 SRM 51-10-02 ITEM 9 DWG DWG 112A4402 SHEET:13 REV: - MEASURE OF CORROSION L: 0.745 W: 0.080? D: 0.008? TOOL USED: DIGITAL CALIPER P/N:500-197-30 S/N: A23272233 DUE DATE: 07-JAN-26; [02] REMOVED RAIL NUT PLATES LOCATED OFSS288 INTERNAL CAVITY LEADING EDGE AT LT WING IAW B737-700 SRM 51-40-02; DUE TO NOT FOUND ALLOWABLE DAMAGE ON SRM 57-41-02-1A-2 MUST BE REPLACED AND PERFORMED VISUAL INSPECTION AND NOT FOUND ADDITIONAL DAMAGE AFTER REMOVAL PART. REPLACED RAIL NUT PLATES LOCATED OFSS288 INTERNAL CAVITY LEADING EDGE AT LT WING IAW B737-700 SRM 51-10-02 ITEM 9 DWG DWG 112A4402 SHEET:13 REV: - MEASURE OF CORROSION L: 0.745 W: 0.080? D: 0.008 TOOL USED: DIGITAL CALIPER P/N:500-197-30 S/N: A23272233 DUE DATE: 07-JAN-26.

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