# SDR AALA20101005ORD01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2010
- Submitted: October 6, 2010
- Operation: Air carrier
- Aircraft: N471AA
- 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: 49601
- Aircraft time: 65,105 hours, 34,139 cycles
- System (JASC): [2215 · Autopilot Main Servo](https://openairdocs.org/jasc/2215)
- Part: Drum
- Part number: 4034236905
- Condition: Faulty
- Location: Elevator Servo
- Stage of operation: AP
- How discovered: O
- Nature of condition: S
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20101005ORD01

## Discrepancy

ORD - CREW REPORTED DURING THE AUTOLAND WITH DIRECT FLIGHT GUIDANCE SYSTEM ONE SELECTED THE AUTOPILOT PULSED AT 50 FEET AND THEN DISCONNECTED.  FLIGHT ACCOMPLISHED A GO AROUND AND LANDED ORD WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED ELEVATOR SERVO DRUM ASSEMBLY.  SYSTEM GROUND CHECKED NORMAL OPERATION.

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