Aircraft Accident/Incident Report

Ashland, Maine 04732
Thursday, March 24, 2011 16:23 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot was employed as a state game warden, and, on the day of the accident, he was on patrol in the ski-equipped airplane when he received a radio call from another game warden whose snowmobile was stuck on a nearby frozen lake. After landing on the lake and assisting another game warden, the pilot departed on the accident flight, presumably to return to his home base. The other game warden reported that, immediately after the airplane departed, the visibility was reduced to less than 1/2-mile due to snow. Postaccident analysis of position information recovered from a portable global positioning system (GPS) receiver showed that the airplane flew for about 10 minutes after takeoff at a relatively constant GPS altitude of about 1,500 feet mean sea level, or about 200 to 500 feet above ground level (agl). Shortly before the accident, the airplane turned left, away from its previously established course, toward a frozen lake along the route. During the final moments of the flight, the airplane entered a right descending turn from about 300 feet agl. During this time, the airplane was in an estimated 40-degree right bank, and its descent rate increased to in excess of 3,000 feet per minute. Examination of the accident site revealed ground scars and airplane damage consistent with the established descent profile continuing to impact. Examination of the wreckage revealed no evidence of any preimpact mechanical malfunctions or failures, although the definitive operational status of the vacuum-driven instruments could not be determined. Analysis of weather information and witness statements were consistent in depicting conditions likely to have produced restricted visibility and possible whiteout conditions in a snow squall over the area at the time of the accident. These restricted visibility conditions would have been conducive to the development of spatial disorientation, and the airplaneā€™s turning ground track and rapid descent were consistent with the pilot losing control of the airplane due to spatial disorientation.

NTSB Probable Cause Narrative

An inadvertent encounter with localized instrument meteorological conditions, which resulted in spatial disorientation and a loss of control.

Event Information

Type of Event Accident
Event Date 3/24/2011
Event Day of the Week Thursday
Time of Event 1623
Event Time Zone Eastern Daylight Time
Event City Ashland
Event State MAINE
Event Country --
Zipcode of the event site 04732
Event Date Year 2011
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 463056N
Event Location Longitude 0690802W
Event Location Airport --
Event Location Nearest Airport ID NONE
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1625 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID ME04
Elevation of weather observation facility 1031
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) -3
Dew Point at event time (in degress fahrenheit) -4
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.67
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 29684
NTSB Notification Source FAA New England ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Mar 23 2012 7:41PM
User who most recently changed record snyg
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N724MT
NTSB Number ERA11GA207
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model A185F
Aircraft Series Identifier --
Aircraft Serial Number 18504283
Certified Max Gross Weight 3350
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 21 2011 12:00AM
Airframe hours since last inspection 23
Airframe Hours 5181
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type Unknown
Aircraft Owner Name DEPARTMENT OF INLAND FISHERIES AND WILDLIFE
Aircraft Owner Street Address 284 STATE ST
Aircraft Owner City AUGUSTA
Aircraft Owner State ME
Aircraft Owner Country USA
Aircraft Owner Zipcode 04333-0041
Operator is an individual? No
Operator Name DEPARTMENT OF INLAND FISHERIES AND WILDLIFE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 284 STATE ST
Operator City AUGUSTA
Operator State ME
Operator Country USA
Operator Zip code 04333-0041
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City Ashland
Departure State ME
Departure Country USA
Departure Time 1613
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code NONE
Destination City Eagle Lake
Destination State ME
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 5 2012 3:07PM
User who most recently changed record kenj
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --