# SDR SWAA2021022246358

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2021
- Submitted: February 22, 2021
- Operation: Air carrier
- Aircraft: [N558WN](https://openairdocs.org/aircraft/N558WN), registered now
- Make and model: Boeing 737-73V
- Registry model: [Boeing 737-73V](https://openairdocs.org/model/boeing-737-73v) (OpenAirDocs)
- Aircraft serial: 30248
- Aircraft time: 55,771 hours, 35,855 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/SWAA2021022246358

## Discrepancy

CRACK STRUCTURE STIFFENER LOCATED FRONT INSPAR RIB 120.30 AT RT HORIZONTAL STABILIZER / REPLACED STIFFENER LOC FRONT INSPAR RIB 120.30 AT RT HORIZONTAL STABILIZER IAW B737-700 SRM 51-40-02 AND DWG #18245304 MATERIAL USED PN BAC1506-4343 PO 2020-1730-65-1

---
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.