Dane County Regional Airport
Aircraft Accident/Incident Report

Madison, Wisconsin 53704
Friday, February 10, 2012 8:29 CST

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that moderate rime ice had accumulated on the airplane during the inbound flight to the fixed-base operator (FBO). FBO employees reported seeing 1 1/2- to 2-inch thick ice on the wings’ unprotected surfaces, the left wing’s radome, and the propeller spinner and around the stall indicator when the airplane arrived. The pilot removed some of the ice with his hand and declined an offer to have the airplane deiced or put it in a heated hangar. Subsequently, the airplane was parked outside at the FBO for about 1 hour, during which time it was snowing and sleeting. Witnesses reported that they did not see the pilot check the tail surfaces for ice and that, when the airplane taxied for takeoff, they saw ice on portions of the airplane, including the radome, and snow on the wings’ surfaces. The pilot reported that, during takeoff, the left wing dropped and was not generating lift, likely due to the ice on the airplane’s surface. The airplane veered left, impacted terrain, and then caught on fire before coming to rest. A postaccident examination of the airplane did not reveal any failure that would have resulted in the loss of control.

NTSB Probable Cause Narrative

The pilot’s failure to ensure that ice and snow were removed from the airplane’s surfaces during the preflight inspection, which resulted in an inadvertent aerodynamic stall after takeoff and loss of control of the airplane.

Event Information

Type of Event Accident
Event Date 2/10/2012
Event Day of the Week Friday
Time of Event 829
Event Time Zone Central Standard Time
Event City Madison
Event State WISCONSIN
Event Country --
Zipcode of the event site 53704
Event Date Year 2012
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 430828N
Event Location Longitude 0892003W
Event Location Airport Dane County Regional
Event Location Nearest Airport ID MSN
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 0
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 832 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID MSN
Elevation of weather observation facility 887
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 1900
Lowest Non-Ceiling Height 1200
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 0
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 0
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 3
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 32642
NTSB Notification Source FAA
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Mar 3 2014 5:23PM
User who most recently changed record sulp
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N850LM
NTSB Number CEN12LA153
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name SOCATA
Aircraft Model TBM 700
Aircraft Series Identifier --
Aircraft Serial Number 538
Certified Max Gross Weight 7427
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 11 2011 12:00AM
Airframe hours since last inspection 45.7
Airframe Hours 423.4
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Precision Aviation LLC
Aircraft Owner Street Address --
Aircraft Owner City Menasha
Aircraft Owner State WI
Aircraft Owner Country USA
Aircraft Owner Zipcode 54952
Operator is an individual? Yes
Operator Name Michael Vrabec
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Menasha
Operator State WI
Operator Country USA
Operator Zip code 54952
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code MSN
Departure City Madison
Departure State WI
Departure Country USA
Departure Time 828
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code FMY
Destination City Fort Myers
Destination State FL
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 20 2014 7:50PM
User who most recently changed record sulp
Since inspection or accident Time of Accident
Event Location Runway Number and Location 21
Runway Length 7200
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --