When turning on lights pilots hand slipped and propeller feather switch was activated.

Attributes
ACN	445279
Time
Date	199907
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : eug.airport
State Reference	OR
Altitude	msl single value : 13000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse.artcc
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	enroute airway : v481.airway
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : commercial pilot : instrument pilot : atp pilot : multi engine
Experience	flight time last 90 days : 250 flight time total : 5500 flight time type : 1600
ASRS Report	445279
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : overcame equipment problem
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

On descent for eug the captain called for descent check completing his flow which included turning on the lights. The logo and inspection lights were stiff switches which required extra effort. The follow through of the hand inadvertently turned on the guarded electric feather pump switch which feathered the #1 engine. Power levers were reduced to idle. The QRH was consulted. No checklist was found. After discussion with the first officer it was agreed to turn the switch back on and take the propeller out of feather. The descent was continued normally and a normal landing was accomplished without further event. On the ground the captain notified maintenance and chief pilot.

Original NASA ASRS Text

Title: WHEN TURNING ON LIGHTS PLTS HAND SLIPPED AND PROP FEATHER SWITCH WAS ACTIVATED.

Narrative: ON DSCNT FOR EUG THE CAPT CALLED FOR DSCNT CHK COMPLETING HIS FLOW WHICH INCLUDED TURNING ON THE LIGHTS. THE LOGO AND INSPECTION LIGHTS WERE STIFF SWITCHES WHICH REQUIRED EXTRA EFFORT. THE FOLLOW THROUGH OF THE HAND INADVERTENTLY TURNED ON THE GUARDED ELECTRIC FEATHER PUMP SWITCH WHICH FEATHERED THE #1 ENG. PWR LEVERS WERE REDUCED TO IDLE. THE QRH WAS CONSULTED. NO CHKLIST WAS FOUND. AFTER DISCUSSION WITH THE FO IT WAS AGREED TO TURN THE SWITCH BACK ON AND TAKE THE PROP OUT OF FEATHER. THE DSCNT WAS CONTINUED NORMALLY AND A NORMAL LNDG WAS ACCOMPLISHED WITHOUT FURTHER EVENT. ON THE GND THE CAPT NOTIFIED MAINT AND CHIEF PLT.

Data retrieved from NASA's ASRS site as of July 2007 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.