Aircraft Accident/Incident Report

Healy, Alaska 99755
Wednesday, October 14, 2009 14:30 AKD

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he was flying a private wildlife biologist over an area of a national park to observe and track wolves using radio telemetry. The pilot stated that during the initial 2 hours of the flight there was no significant turbulence, only what he characterized as light chop. The pilot indicated that just prior to the accident he flew over a ridge that rose to about 500 to 800 feet above the ground. When the pilot maneuvered the airplane to reverse direction toward the ridge, it encountered turbulence and downdrafts that increased the airplaneā€™s bank angle and pushed it towards the ground, ultimately causing it to strike trees and the ground. A postaccident examination of the airplane revealed no mechanical malfunctions or failures that would have precluded normal operation. Additionally, a warning had been issued to airmen for the possibility of severe or greater turbulence, severe icing, low-level wind shear, and instrument flight conditions in the general area at the time of the accident.

NTSB Probable Cause Narrative

The pilot's decision to maneuver at a low altitude over rising terrain in conditions conducive to turbulence/downdrafts, resulting in a loss of control and impact with terrain.

Event Information

Type of Event Accident
Event Date 10/14/2009
Event Day of the Week Wednesday
Time of Event 1430
Event Time Zone --
Event City Healy
Event State ALASKA
Event Country --
Zipcode of the event site 99755
Event Date Year 2009
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 633710N
Event Location Longitude 1495404W
Event Location Airport --
Event Location Nearest Airport ID --
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 1456 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) 75
Weather Observation Facility ID PAIN
Elevation of weather observation facility 1720
Distance of event from weather observation facility (units?) 31
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 300
Lowest Non-Ceiling Height 300
Sky/Lowest/Cloud Conditions Thin Overcast
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 10
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.49
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 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 27757
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jan 11 2011 1:46PM
User who most recently changed record lema
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2764J
NTSB Number ANC10FA004
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model A185E
Aircraft Series Identifier --
Aircraft Serial Number 185-1514
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 Apr 16 2009 12:00AM
Airframe hours since last inspection --
Airframe Hours 3475
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Dan McGregor
Aircraft Owner Street Address --
Aircraft Owner City DENALI PARK
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99755-0172
Operator is an individual? No
Operator Name Dan McGregor
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City DENALI PARK
Operator State AK
Operator Country USA
Operator Zip code 99755-0172
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) Aerial Observation
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code A06
Departure City McKinley Park
Departure State AK
Departure Country USA
Departure Time 1200
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code A06
Destination City McKinley Park
Destination State AK
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 5 2010 7:46PM
User who most recently changed record stam
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 --