# SDR AALA2019022290007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2019
- Submitted: February 22, 2019
- Operation: Air carrier
- Aircraft: [N501AA](https://openairdocs.org/aircraft/N501AA), registered now
- 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: 49738
- Aircraft time: 81,297 hours, 43,590 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Servo
- Part number: 2587781901
- Condition: Unreliable
- Location: Autothrottle
- Stage of operation: NR
- 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/AALA2019022290007

## Discrepancy

AUTOTHROTTLES GO TO CLAMP IMMEDIATELY AFTER AUTOTHROTTLE WAS ENGAGED,  INSTEAD OF AT APPROX. 60  KTS. AS A RESULT MUCH LOWER THAN FORCAST EPR IS SET AND THROTTLES MUST BE MANUALLY ADVANCED TO TAKEOFF THRUST.  THE AIRCRAFT WAS GROUNDED.   REPLACED AUTOTHROTTLE ACTUATOR IAW AMM 22-31-01. OPS TEST OK.

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