# SDR SWAA2021021541356

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2021
- Submitted: February 15, 2021
- Operation: Air carrier
- Aircraft: [N439WN](https://openairdocs.org/aircraft/N439WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29834
- Aircraft time: 59,583 hours, 35,303 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/SWAA2021021541356

## Discrepancy

RT HORIZ. STAB RIB AT STAB STA 129.50 3RD VERT STIFFENER IS CRACKED. / REPAIRED 3RD VERT STIFFENER ON RT HORIZ STAB RIB AT STA 129.50 IAW SRM 55-10-09-2R-4 AND DWGS 182A3001; 182A1500; 002A0001; 182A2401; SRM 51-40-02-OG-0.

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