# SDR CALA2024082000471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2024
- Submitted: August 20, 2024
- Operation: Air carrier
- Aircraft: [N17296](https://openairdocs.org/aircraft/N17296), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67556
- Aircraft time: 5,498 hours, 1,911 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Relay
- Part number: M835362024M
- Condition: Faulty
- Location: Autopilot
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024082000471

## Discrepancy

NEITHER AUTOPILOT WILL ENGAGE AFTER SEVERAL ATTEMPTS DURING CLIM B AND CRUISE ACCOMPLISHED FIM TASK 22-11 TASK 933 FOR MAINT MSG 22-11176 UP TO STEP F.2.    REMOVED AND REPLACED MAIN ELEC STAB TRIM RELAY R1193, REQUIRES LAND VERIFY.   PERFORMED SPD/STB TRIM TEST LAND VERIFY TEST PER AMM 22-11-00-700-801. OPS CHK GOOD. ALL TEST PAASED WITH NO FAULTS

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