# SDR SWAA2023121320884

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2023
- Submitted: December 13, 2023
- Operation: Air carrier
- Aircraft: [N454WN](https://openairdocs.org/aircraft/N454WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29851
- Aircraft time: 64,962 hours, 38,713 cycles
- System (JASC): [5754 · Leading Edge Devices](https://openairdocs.org/jasc/5754)
- Part: Rail
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 500 Left Wing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023121320884

## Discrepancy

CRACK LEADING EDGE RAIL NUTPLATES LOCATED OFSS 574 AT LT WING 2023-689362<[01] REPLACED RAIL NUT PLATES LOCATED OFSS 574 AT LT WING IAW B737-700 SRM 51-40-02 AND TOOK MESURE OF CRACK; MEASURE IS L= 0.418' TOOL USED; DIGITAL CALIPER P/N:500-197-30; S/N:A21147761; DUE DATE: 12-MAR-2024.;[02] REPLACED RAIL NUT PLATES LOCATED OFSS 574 AT LT WING IAW B737-700 SRM 51-40-02 AND TOOK MESURE OF CRACK; MEASURE IS L= 0.418' TOOL USED; DIGITAL CALIPER P/N:500-197-30; S/N:A21147761; DUE DATE: 12-MAR-2024

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