# SDR CALA2021122902471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2021
- Submitted: December 29, 2021
- Operation: Air carrier
- Aircraft: [N37434](https://openairdocs.org/aircraft/N37434), registered now
- Make and model: Boeing 737900
- Aircraft serial: 33528
- Aircraft time: 36,047 hours, 12,781 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stabilizer
- Part number: NA
- Condition: Cracked
- Location: Lh
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2021122902471

## Discrepancy

L/H HORIZONTAL STABILIZER - CRACK FOUND AT STAB STA 138.70, 10" FWD OF REAR SPAR & INBD OF DRAIN HOLE, CRACK LENGTH :0.276" REF AAR NR 9643094 ACCOMPLISHED REPAIR AT STA 138.70 REF B737-900 SRM 55-10-01-2R- 11, INSPECTION REQUIREMENTS VISUAL AND LFEC INSPECT EVERY 9,000 FLIGHT CYCLES WORK ACCOMPLISHED BY V900829

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