# SDR SWAA2020031742539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2020
- Submitted: March 17, 2020
- Operation: Air carrier
- Aircraft: [N255WN](https://openairdocs.org/aircraft/N255WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32513
- Aircraft time: 47,394 hours, 28,231 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Lt Horiz Stab
- 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/SWAA2020031742539

## Discrepancy

L/H STAB #4 STIFFNER ON THE #4 RIB STAB STA.120-30 HAS A CRACK ON THE LOWER END. (VERIFIED BY HIEC PART  6 51-00-00 PROC 25)         (COMPLETE SA-M 326 # A1155876) REMOVED AND REPLACED L/H STAB RIB STA' 120.30 PER SRM 51-40-02. REF SA-M 326 FOR INDIVIDUAL SIGNED OFF

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