# SDR SWAA2019121739693

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2019
- Submitted: December 17, 2019
- Operation: Air carrier
- Aircraft: N921WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36626
- Aircraft time: 40,155 hours, 24,145 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Part number: 186A200041
- Part serial: 1C1216
- 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/SWAA2019121739693

## Discrepancy

R/H HORIZONTAL STABILIZER INTERNAL STRUCTURE AT THE #1 RIB (STAB. STA. 92.7), 2ND VERTICAL STIFFENER #4 RIB (STA 120.30), 2ND & 3RD STIFFENER, & #5 RIB (S STA 129.50), 2ND VERTICAL STIFFENER CRACKED.       / REPAIRED #1 RIB PER EA.

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