# SDR UHLA100771

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2002
- Submitted: December 17, 2002
- Operation: Air carrier
- Aircraft: [N123XS](https://openairdocs.org/aircraft/N123XS), registered now
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: N123XS
- Engine: Ge CT75A2
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pressure Switch
- Part number: 1103P0620
- Condition: Failed
- Location: Autocoarsen
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UHLA100771

## Discrepancy

PILOT REPORTS AUTOCOARSEN SYSTEM FAILED ON TAKEOFF ROLL AIRCRAFT RETURNED TO GATE.  MECHANIC PERFORMED GROUND RUN AUTOCOARSEN SYSTEM ADJUSTMENT/TEST IAW MM.  OPS CHECKED GOOD AT THIS TIME.  AIRCRAFT RETURNED TO SERVICE.

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