# SDR SWAA2021042858884

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2021
- Submitted: April 28, 2021
- Operation: Air carrier
- Aircraft: [N443WN](https://openairdocs.org/aircraft/N443WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29838
- Aircraft time: 60,053 hours, 35,289 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Horizontal Stab
- 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/SWAA2021042858884

## Discrepancy

CRACK LEADING EDGE RIB Ï¿½4 AT LT HORIZONTAL STABILIZER / REPLACED LEADING EDGE RIB #4 AT LT HORIZONTAL STABILIZER I.A.W B737-700 SRM 51-40-02 AND DWG 186A1304-1 REV. DWG 186A1001-15 REV A. PART USED 186A1352-7 P.O:202113368500101

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