# SDR GTIA020780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2002
- Submitted: September 24, 2002
- Operation: Air carrier
- Aircraft: N827NK
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 49793
- System (JASC): [2213 · Flight Controller](https://openairdocs.org/jasc/2213)
- Part: Rheostat
- Part number: 7446120
- Part serial: 130389
- Condition: Failed
- Location: Aileron Servo
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA020780

## Discrepancy

DEN - FLT 980 - IN TURN YOKE VERY JERKY, AUTO PILOT DISENGAGES.  OK IN LEVEL FLIGHT, NR 2 AUTO PILOT.  TROUBLESHOT AUTOPILOT SYSTEM.  FOUND AILERON SERVO RHEOSTAT BAD.  CHECKED WITH METER LEFT SIDE GOOD RIGHT SIDE BAD.  REMOVED AND REPLACED RHEOSTAT AND AILERON SERVO DRIVE PER MD-80 MM 22-11-01.  SYSTEM OPS CHECKED GOOD PER MD80 MM 22-11-01 AND RTS PER 22-01-05.  (M)

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