Aircraft Accident/Incident Report

Tyonek, Alaska 99682
Saturday, January 13, 2007 18:00 AST

NTSB Narrative Summary Released at Completion of Accident

The airplane was being operated by the private pilot as a visual flight rules (VFR) personal cross-country flight under Title 14, CFR Part 91. The pilot said he landed the ski-equipped airplane in a snow-covered meadow. He said the snow conditions were not what he had expected, and prior to takeoff, he had to dig the airplane out, and pack down an area around the airplane with his snowshoes. He said he packed down a takeoff area, and removed as much gear from the airplane as possible to lighten the takeoff load. During the takeoff roll, the pilot said the airplane veered off the packed area, burying the right ski and wing in the snow. The mechanic who examined the airplane said both the fore and aft main spars in the right wing would have to be replaced. The airplane was not examined by the NTSB.

NTSB Probable Cause Narrative

The pilot's selection of unsuitable terrain for takeoff, which resulted in a loss of directional control on the ground, and the wing impacting the snow-covered terrain. A factor associated with the accident was the snow-covered terrain.

Event Information

Type of Event Accident
Event Date 1/13/2007
Event Day of the Week Saturday
Time of Event 1800
Event Time Zone Atlantic Standard Time
Event City Tyonek
Event State ALASKA
Event Country --
Zipcode of the event site 99682
Event Date Year 2007
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 611348N
Event Location Longitude 1520415W
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 Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions --
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 0
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) 0
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 21980
NTSB Notification Source FAA Atlanta, ROC
NTSB Notification Date Jan 13 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 25 2007 12:22PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Anchorage FSDO-03

Aircraft Involved

Aircraft #1

Aircraft Registration Number N237WT
NTSB Number ANC07LA015
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire --
Aircraft Explosion --
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-18
Aircraft Series Identifier --
Aircraft Serial Number --
Certified Max Gross Weight 1750
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Scott Gage
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99516
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
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 --
Departure City Tyonek
Departure State AK
Departure Country USA
Departure Time --
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code MRI
Destination City Merrill Field
Destination State AK
Destination Country USA
Specific Phase of Flight Takeoff - roll/run
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 24 2007 5:56PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --