# SDR 375PA0006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 2002
- Submitted: October 28, 2002
- Operation: Air carrier
- Aircraft: [N375PA](https://openairdocs.org/aircraft/N375PA), registered now
- Make and model: Boeing 737-3Y0
- Registry model: [Boeing 737-3Y0](https://openairdocs.org/model/boeing-737-3y0) (OpenAirDocs)
- Aircraft serial: 23812
- Aircraft time: 42,488 hours, 36,671 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Computer
- Condition: Malfunctioned
- Location: Autopilot
- Stage of operation: TO
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/375PA0006

## Discrepancy

AUTO THROTTLE WOULD NOT ARM ON TAKE-OFF.  ON DECENT INTO SFB, IN LEVEL CHANGE, AT MOVED FWD & BACK SWITCHING FROM "N" TO "RETARD" REPEATEDLY.  CHK'D AUTO THROTTLE COMPUTER & RAN BITE CHK. ON CDU PER MM22-31-00 PG.501-508, NO FAULTS FOUND.

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