# SDR SWAA2017121918565

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2017
- Submitted: December 20, 2017
- Operation: Air carrier
- Aircraft: [N943WN](https://openairdocs.org/aircraft/N943WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36913
- Aircraft time: 27,410 hours, 16,237 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Part number: 186A100041
- Part serial: SAML1873
- Condition: Cracked
- Location: Lt Horiz Stab
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2017121918565

## Discrepancy

LT HORIZONTAL STABILIZER NR 4 INSPAR RIB LEADING EDGE CRACKED AT STA 123.85 IN THE SECOND, THIRD AND FOURTH VERTICAL STIFFENER.  R&R STABILIZER IAW AMM.

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