# SDR SWAA2025112029022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2025
- Submitted: November 20, 2025
- Operation: Air carrier
- Aircraft: [N8623F](https://openairdocs.org/aircraft/N8623F), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36731
- Aircraft time: 39,409 hours, 19,063 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Zone 300
- 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/SWAA2025112029022

## Discrepancy

CRACK RIB LOCATED LE HSS 105.26 LT HORIZONTAL STAB.  REPLACED RIB IAW SRM 51-10-02, ITEM 9, SRM 51-40-02, AND DWG 186A1001, SHEET 19, REV-, DUE TO NO ALLOWABLE DAMAGE FOUND IN SRM IAW SRM 55-10-09-1A-1, ALLOWABLE DAMAGE 1.  MEASUREMENT OF CRACK IS:0.5500 INCH.

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