# SDR SWAA2021082497940

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2021
- Submitted: August 24, 2021
- Operation: Air carrier
- Aircraft: [N224WN](https://openairdocs.org/aircraft/N224WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32493
- Aircraft time: 53,348 hours, 31,840 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Bs 440-492
- 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/SWAA2021082497940

## Discrepancy

CORROSION LOWER SILL LOCATED BTW BS 440 TO BS 492.4 STR 25R/26R WL 156 AT FWD CARGO COMPARTMENT ; 2021-348760 / [01] TOOL USED DIGITAL CALIPER P/N 700-113-10 S/N 0031753 DUE DATE 30-SEP-21.; [02] TOOL USED: P/N: 45MG; S/N: 130066701; DUE DATE: 22-APR-22; [03] REPLACED LOWER SILL LOCATED BTW BS 440 TO BS 492.4 STR 25R/26R WL 156 AT FWD CARGO COMPARTMENT IAW B737-700 SRM 51-10-02 AND DRAWING 143A8330 REV -; [04] JOB COMPLETE RR INSPECTION DONE.

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