# SDR SWAA2020110420987

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2020
- Submitted: November 4, 2020
- Operation: Air carrier
- Aircraft: [N429WN](https://openairdocs.org/aircraft/N429WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33658
- Aircraft time: 61,054 hours, 35,875 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- 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/SWAA2020110420987

## Discrepancy

RT HORIZONTAL STAB RIB NR 4, STIFFENER NR 2 HAS CRACK.  INSTALLED HORIZONTAL STABILIZER MECHANICAL INSPAR RIB STIFFENER CRACK REPAIR AT STIFFNER NR 2 RIB NR 4 RT HORIZONTAL STAB, PER REF B737-700 SRM 55-10-09-2R-4.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.