Mdt had one propeller overspeed uncontrollably during approach.

Attributes
ACN	87935
Time
Date	198805
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mke
State Reference	WI
Altitude	msl bound lower : 4500 msl bound upper : 4500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mke
Operator	common carrier : air carrier
Make Model Name	Medium Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 180 flight time total : 12800 flight time type : 880
ASRS Report	87935
Person 2
Function	controller : approach
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During visual approach and configuring to land, the right engine overspeeded. During the procedures that were followed the right engine was shut down as a result of our inability to reduce ram and drag. An emergency was declared and no further complications occurred as we proceeded to airport and landed.

Original NASA ASRS Text

Title: MDT HAD ONE PROPELLER OVERSPEED UNCONTROLLABLY DURING APCH.

Narrative: DURING VISUAL APCH AND CONFIGURING TO LAND, THE RIGHT ENGINE OVERSPEEDED. DURING THE PROCEDURES THAT WERE FOLLOWED THE RIGHT ENGINE WAS SHUT DOWN AS A RESULT OF OUR INABILITY TO REDUCE RAM AND DRAG. AN EMER WAS DECLARED AND NO FURTHER COMPLICATIONS OCCURRED AS WE PROCEEDED TO ARPT AND LANDED.

Data retrieved from NASA's ASRS site as of August 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.