# SDR MALA010645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2001
- Submitted: August 15, 2001
- Operation: Air carrier
- Aircraft: N68XJ
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 340A068
- System (JASC): [7710 · Power Indicating System](https://openairdocs.org/jasc/7710)
- Part: Torque Sensor
- Part number: 503J177612
- Part serial: 51M2A786
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA010645

## Discrepancy

During Climbout on Flight #3380 at approximately 65% TRQ I tried to reduce Left Engine power.  Initially no response.  TRQ shot down to 25 to 30%.  After small power applications RQ would surge to 65 to 70%. Engine was only stable between 30 to 40% TRQ.  Maintenance replaced Torque sensor PN 503J177612 SN/off 51M2A608 SN/on 51M2A786. IAW CHp 74-20 Ops check good at this time.

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