# SDR SWAA2021042257691

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2021
- Submitted: April 22, 2021
- Operation: Air carrier
- Aircraft: N551WN
- Make and model: Boeing 737-76Q
- Registry model: [Boeing 737-76Q](https://openairdocs.org/model/boeing-737-76q) (OpenAirDocs)
- Aircraft serial: 30280
- Aircraft time: 60,799 hours, 37,574 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/SWAA2021042257691

## Discrepancy

LT HORIZONTAL STAB RIB 3 (STAB STA 110.10) HAS CRACK ON 3RD STIFFENER; LOWER EDGE / REMOVED THE DAMAGED PART AT LT HORIZ. STAB RIB 3 STAB STA 110.10 3RD STIFFENER LOWER EDGE AND INSTALLED REPAIR PARTS IAW SRM 55-10-09-2R-4 88920U 22MAR21

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