# SDR SIMA200722901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2007
- Submitted: August 17, 2007
- Operation: Air carrier
- Aircraft: N219AE
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B219
- Aircraft time: 23,128 hours, 24,697 cycles
- Propeller: Hamstd 14RF19
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Pcu
- Part number: 78249052
- Part serial: 900183
- Condition: Failed
- Location: Rt Propeller
- Part time: 19,724 hours, 11,593 cycles
- Component: Propeller, Hamstd
- Component part number: 8147212
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200722901

## Discrepancy

RIGHT PROPELLER SURGING, TORQUE FLUCTUATED PLUS/MINUS 3 PERCENT WITH ITT INCREASING AND DECREASING PLUS/MINUS 5 PERCENT WITH TORQUE.  REMOVED AND REPLACED RIGHT PROPELLER CONTROL UNIT IAW SAAB AMM 61-20-05.  PERFORMED OPERATIONAL CHECKS IAW SAAB AMM 61-00-00 AND 71-00-00 WITH NO DEFECTS.  AIRCRAFT RETURNED TO SERVICE.

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