SF340 captain rejects takeoff when left propeller autocoarsens at 45 knots.

Attributes
ACN	757773
Time
Date	200710
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340B
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	757773
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Upon takeoff; the left propeller felt like it was autocoarsened. Aborted takeoff at 45 KTS; and immediately noticed that the left ignition light was also illuminated. Called dispatch and maintenance and returned to the gate where the passenger were deplaned.

Original NASA ASRS Text

Title: SF340 CAPT REJECTS TKOF WHEN LEFT PROPELLER AUTOCOARSENS AT 45 KNOTS.

Narrative: UPON TKOF; THE L PROP FELT LIKE IT WAS AUTOCOARSENED. ABORTED TKOF AT 45 KTS; AND IMMEDIATELY NOTICED THAT THE L IGNITION LIGHT WAS ALSO ILLUMINATED. CALLED DISPATCH AND MAINT AND RETURNED TO THE GATE WHERE THE PAX WERE DEPLANED.

Data retrieved from NASA's ASRS site as of January 2009 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.