# SDR SWAA2022093065335

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2022
- Submitted: September 30, 2022
- Operation: Air carrier
- Aircraft: [N431WN](https://openairdocs.org/aircraft/N431WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29845
- Aircraft time: 66,939 hours, 39,408 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: None
- Condition: Cracked
- Location: Lh Hor 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/SWAA2022093065335

## Discrepancy

LHS LEADING EDGE HAS RIB 4 CRACKED. 8-22 / [01] REMOVED AT LT HORIZONTAL STABILIZER OF LEADING EDGE RIB #4 IN IAW SRM 51-40-02-0G-0;[02] LOCATED AND DRILLED NEW RIB IN IAW SRM 51-40-05-0G-0;[03] VERIFIED 1-2. OK TO INSTALL NEW RIB.;[04] INSTALLED NEW RIB #4 AT LT HORIZONTAL STABILIZER LEADING EDGE IN IAW SRM 51-40-02-0G-0 AND DWG # 186A1001;[05] REMOVED AND INSTALLED NEW RIB #4 AT LT HORIZONTAL STABILIZER LEADING EDGE P/N 186A1304-1 IN IAW SRM 51-40-02-0G-0 AND DWG # 186A1001;[06] VERIFIED 4-5.

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