# SDR 04005316

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2004
- Submitted: January 15, 2004
- Operation: Air carrier
- Aircraft: [N316UE](https://openairdocs.org/aircraft/N316UE), registered now
- Make and model: Jetair JETSTM4101
- Aircraft serial: 41055
- Aircraft time: 21,262 hours, 21,010 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Servo
- Part number: 4006719904
- Part serial: 920996092
- Condition: Faulty
- Stage of operation: UK
- How discovered: 9
- Nature of condition: F
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/04005316

## Discrepancy

DURING OPERATION OF AIRCRAFT CREW REPORTED OSCILLATIONS IN VERTICAL MODE OF FLIGHT DIRECTOR WITH AUTOPILOT DISCONNECTING.  THE AUTOPILOT SERVO WAS FOUND FAULTY AND WAS REPLACED.  A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

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