# SDR SWAA2020050137677

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2020
- Submitted: May 1, 2020
- Operation: Air carrier
- Aircraft: [N475WN](https://openairdocs.org/aircraft/N475WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32474
- Aircraft time: 54,947 hours, 32,366 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Rt 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/SWAA2020050137677

## Discrepancy

T HORIZONTAL STABILIZER L/E RIB NUMBER 9 IS RACKED BY THE FASTENER HOLE AS MARKED. DOT 2-035. / REMOVED AND REPLACED DAMAGED RIB ON R/H HORIZONTAL STABILIZER L/E RIB #9 STA 151.75' (P/N 186A1401-2) PER REF B737 SRM 51-40-02-0G-0 AND PL186A1308.

---
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.