A C402 propeller autofeathered during a maintenance test flight takeoff.

Attributes
ACN	635254
Time
Date	200410
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	UT
Altitude	agl bound lower : 0 agl bound upper : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air taxi
Make Model Name	Cessna 402/402C/B379 Businessliner/Utiliner
Operating Under FAR Part	Part 135
Flight Phase	descent : approach landing : roll
Route In Use	approach : traffic pattern
Flight Plan	VFR
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 50 flight time total : 1300 flight time type : 50
ASRS Report	635254
Person 2
Affiliation	company : air taxi
Function	other personnel other oversight : supervisor
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : engine indicator
Resolutory Action	controller : provided flight assist flight crew : declared emergency flight crew : landed in emergency condition
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Aircraft just came out of 'maintenance.' chief pilot asked me to take it around pattern. Right engine feathered itself after takeoff. I was just going around once anyway. 'Tower knew that.' I told tower I had a rudder/feather problem and asked to land 'immediately.' tower was fantastic, landed 1 engine feathered. Felt very safe, because tower and ground responded perfect.

Original NASA ASRS Text

Title: A C402 PROP AUTOFEATHERED DURING A MAINT TEST FLT TKOF.

Narrative: ACFT JUST CAME OUT OF 'MAINT.' CHIEF PLT ASKED ME TO TAKE IT AROUND PATTERN. R ENG FEATHERED ITSELF AFTER TKOF. I WAS JUST GOING AROUND ONCE ANYWAY. 'TWR KNEW THAT.' I TOLD TWR I HAD A RUDDER/FEATHER PROB AND ASKED TO LAND 'IMMEDIATELY.' TWR WAS FANTASTIC, LANDED 1 ENG FEATHERED. FELT VERY SAFE, BECAUSE TWR AND GND RESPONDED PERFECT.

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.