# SDR 29GA2014060900001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2014
- Submitted: June 9, 2014
- Operation: Air carrier
- Aircraft: N347AG
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B447
- Aircraft time: 30,572 hours, 34,025 cycles
- System (JASC): [6140 · Propeller Indication System](https://openairdocs.org/jasc/6140)
- Part: Sensor
- Part number: 4088T42P01
- Part serial: SIMT1777
- Condition: Malfunctioned
- Location: Propeller Speed
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/29GA2014060900001

## Discrepancy

DURING CRUISE, LEFT PROPELLER DROPPED FROM 1230-1100 RPM, FOLLOWED BY A DROP FROM 1230-800 RPM TWICE WAS NOT AN INDICATION EVENT,  RETURNED TO DEPARTURE, LANDED WITHOUT INCIDENT.  REPLACED PROPELLER SPEED INDICATOR AND SPEED SENSOR.

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