# SDR SWAA2021050364616

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2021
- Submitted: May 3, 2021
- Operation: Air carrier
- Aircraft: [N435WN](https://openairdocs.org/aircraft/N435WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32455
- Aircraft time: 60,695 hours, 36,047 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/SWAA2021050364616

## Discrepancy

RIGHT HORIZONTAL STAB. FRONT STIFFENER AT RIB #4 FOUND CRACK. STA 120.30 / REMOVED CRACK STIFFENER AND INSTALLED NEW STIFFENER ON R/H HORIZONTAL STAB. STA 120.30 FRONT; PER REF B737 SRM 51-40-02-06-0 AND DRAWING 182A2401

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