# SDR AALA2009010700153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2009
- Submitted: March 24, 2009
- Operation: Air carrier
- Aircraft: [N599AA](https://openairdocs.org/aircraft/N599AA), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53289
- Aircraft time: 53,764 hours
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Accelerometer
- Part number: 403239901
- Part serial: 92011290
- Condition: Failed
- Location: Autopilot
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2009010700153

## Discrepancy

ORD INFLIGHT - AFTER TAKEOFF CREW REPORTED AUTO THROTTLE AND AUTO PILOT WERE INOPERATIVE.  CAPTAIN ELECTED TO RETURN TO ORD.  LANDED ORD WITHOUT INCIDENT.  REPLACED BOTH ACCELEROMETERS.  SYSTEM GROUND CHECKED NORMAL OPERATION.

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