A beech 1900D on takeoff at 400 ft AGL declared an emergency and returned to the field due to the #2 engine propeller going to feather position, uncommanded.

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Attributes
ACN	397052
Time
Date	199803
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : jax
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 400
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : jax
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 16700 flight time type : 13000
ASRS Report	397052
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Just after takeoff at 400 ft AGL the right propeller feathered, uncommanded. Crew treated the condition as a partial engine loss and received vectors for an ILS runway 7, at jax. Landed uneventfully. Taxied back to gate, let all passenger off. I was captain of air carrier flight xyz, aircraft #YYY on mar/tue/98. On mar/mon/98, aircraft had write-up on right propeller governor. Maintenance replaced right propeller governor.

Original NASA ASRS Text

Title: A BEECH 1900D ON TKOF AT 400 FT AGL DECLARED AN EMER AND RETURNED TO THE FIELD DUE TO THE #2 ENG PROP GOING TO FEATHER POS, UNCOMMANDED.

Narrative: JUST AFTER TKOF AT 400 FT AGL THE R PROP FEATHERED, UNCOMMANDED. CREW TREATED THE CONDITION AS A PARTIAL ENG LOSS AND RECEIVED VECTORS FOR AN ILS RWY 7, AT JAX. LANDED UNEVENTFULLY. TAXIED BACK TO GATE, LET ALL PAX OFF. I WAS CAPT OF ACR FLT XYZ, ACFT #YYY ON MAR/TUE/98. ON MAR/MON/98, ACFT HAD WRITE-UP ON R PROP GOVERNOR. MAINT REPLACED R PROP GOVERNOR.

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.