# SDR SWAA2020050774806

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2020
- Submitted: May 4, 2022
- Operation: Air carrier
- Aircraft: [N939WN](https://openairdocs.org/aircraft/N939WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36646
- Aircraft time: 37,705 hours, 22,596 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Stiffener
- Condition: Cracked
- Location: L/H Horiz. 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/SWAA2020050774806

## Discrepancy

SUPPLEMENTAL INFORMATION: L/H STABILIZER RIB AT STA 120.33 3RD VERTICAL STIFFENER IS CRACKED / REMOVED DAMAGED AND REPAIRED LH STABILIZER RIB AT STA 120.33; 3RD VERTICAL STIFFENER - CATEGOARY A REPAIR INSTALLED PER SRM 55-10-09-2R-4 REPAIR 4.

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