# SDR GTIA020581

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2002
- Submitted: July 23, 2002
- Operation: Air carrier
- Aircraft: N801NK
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 48048
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Servo
- Part number: 4034237915
- Part serial: 87071745
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: DE
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA020581

## Discrepancy

ACY - FLT 259 - FOUND AUTO PILOT FAILED ON DESCENT A/P TRIM LIGHT WAS ON.  A/P FAILED TO CAPTURE ALT ON DESCENT USING NR 1 A/P.  REMOVED AND REPLACED ELEVATOR SERVO DRIVE ASSY RTS CHECK RAN, OPS CHECK NORMAL.  (M)

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