# SDR AALA202207068351

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 22, 2022
- Submitted: July 6, 2022
- Operation: Air carrier
- Aircraft: [N845NN](https://openairdocs.org/aircraft/N845NN), registered now
- Make and model: Boeing 737
- Aircraft serial: 40579
- Aircraft time: 35,529 hours, 14,464 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Zone 300 - Stabs
- 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/AALA202207068351

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CRACK FOUND ON LEFT HORIZONTAL STABILIZER RIB STIFFENER LOCATED AT STABILIZER STA 101.9 AND WATER LINE 0. INSTALLED RIB REINFORCEMENT REPAIR PER SRM 55-10-09-2R-4.

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