# SDR SWAA2021080486468

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2021
- Submitted: August 4, 2021
- Operation: Air carrier
- Aircraft: N417WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29822
- Aircraft time: 65,751 hours, 38,956 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- 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/SWAA2021080486468

## Discrepancy

LEFT HORIZONTAL STABILIZER FRONT SPAR L/E FAIRING CRACKED @ RIB # 7 END EDGE ; / [01] REMOVED RIB #7 FROML/H STAB. FRONT SPAR L/E FAIRING PER B737-700 SRM 51-40-02-0G-0; [02] LOCATED AND DRILLED NEW RIB P/N 186A1307-3 PO # 1718180 PER B737-700 SRM 51-40-05-OG-0; [03] VERIFIED HOLES; [04] OK TO INSTALL NEW RIB.; [05] INSTALLED #7 RIB IAW. B-737-700 SRM 51-40-02-0G-; [06] REMOVED AND REPLACED RIB #7 AT LEG HORIZONTAL STAB. FRONT SPAR L/E. FAIRING IAW. B-737-700 SRM 51-40-02-0G-0; [07] VERIFIED 5; 6.

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