Malfunctioning RPM control on the left engine causes SF340B flight crew to shut down the engine and ...

Attributes
ACN	836284
Time
Date	200905
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Propeller Pitch Change Mechanism
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 18 Flight Crew Total 3500 Flight Crew Type 700
Person 2
Function	Pilot Flying First Officer
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

While completing the after takeoff checklist; I attempted to sync the propellers; and noticed abnormal fluctuations on the left side RPM gauge; as well as heard the abnormal fluctuations. Then noticed both prop oil pressure; and prop oil temperature on the left side were out of normal range. Completed the emergency non-normal checklist for propeller oil pressure low; held; contacted dispatch; and maintenance control. Both pilots checked the circuit breakers multiple times. Contacted dispatch again; and advised them that we were proceeding with the prop oil temperature hi or low checklist which would result in an engine shutdown. They concurred on the checklist dictating the engine shutdown. We declared an emergency and returned to the departure airport.

Original NASA ASRS Text

Title: Malfunctioning RPM control on the left engine causes SF340B flight crew to shut down the engine and return to their departure airport.

Narrative: While completing the after takeoff checklist; I attempted to sync the propellers; and noticed abnormal fluctuations on the left side RPM gauge; as well as heard the abnormal fluctuations. Then noticed both prop oil pressure; and prop oil temperature on the left side were out of normal range. Completed the emergency non-normal checklist for propeller oil pressure low; held; contacted Dispatch; and Maintenance Control. Both pilots checked the circuit breakers multiple times. Contacted Dispatch again; and advised them that we were proceeding with the prop oil temperature hi or low checklist which would result in an engine shutdown. They concurred on the checklist dictating the engine shutdown. We declared an emergency and returned to the departure airport.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.