# SDR CALA2023010400026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2023
- Submitted: January 4, 2023
- Operation: Air carrier
- Aircraft: [N23707](https://openairdocs.org/aircraft/N23707), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28768
- Aircraft time: 75,211 hours, 26,987 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Relay
- Condition: Inoperative
- Location: Stab Trim
- 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/CALA2023010400026

## Discrepancy

STAB TRIM INOPERATIVE.  UNABLE TO ENGAGE AUTOPILOT.   REPLACED STAB TRIM CONTROL RELAY, R64 IN J4 JUNCTION BOX.   OPERATED GROUND TEST OFTHE SYSTEM, GROUND TEST PASSED AND CHECKED OK IAW TASK 27-41-71-700-801.

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