# SDR JBXA000203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2000
- Submitted: October 9, 2000
- Operation: Air carrier
- Aircraft: [N590ML](https://openairdocs.org/aircraft/N590ML), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7385
- Aircraft time: 1,314 hours, 1,185 cycles
- System (JASC): [2731 · Elevator Tab Control System](https://openairdocs.org/jasc/2731)
- Part: Switch
- Part number: 70608
- Part serial: 0790
- Condition: Faulty
- Location: Elevator Trim
- Stage of operation: CL
- 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/JBXA000203

## Discrepancy

STAB TRIM AND MACH TRIM DISENGAGES WHEN TRIM NOSE UP OR NOSE DOWN TRIM SWITCH IS ACTIVATED.  STAB TRIM AND MACH TRIM DISENGAGED AFTER T/O WHEN ACTIVATING TRIM SWITCH.  AIR RETURN TO ROC.  REPLACED HORIZONTAL STAB TRIM CONTROL UNIT WITH SERVICABLE UNIT IAWAMM 27-41-01, OPS CK GOOD.  PERFORMED OPS CK OF HORT STAB CONTROL AND MACH TRIM IAW AMM 27-41-00, OPS CK GOOD AT THIS TIME AND NO FAULTS.

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