Aircraft Accident/Incident Report

Clear, Alaska 99704
Thursday, December 23, 2010 14:30 AST

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that while in level cruise flight, the airplane's engine began to lose power, and then lost all power. He said he was unable to restart the engine, and selected a snow and tree-covered area as a forced landing site. During the forced landing, the airplane's left wing collided with a tree, resulting in substantial damage to the fuselage, empennage, and left wing. He said that at the time of the accident the outside air temperature was minus 22 degrees F, and that during his postaccident inspection of the airplane he discovered that the engine fuel gascolator filter had become blocked by ice crystals. He stated that there were no preaccident mechanical problems with the airplane, and noted that the accident might have been prevented if he had removed the gascolator during his preflight to check for ice crystals, or preheated the engine, and then drained the water from the gascolator.

NTSB Probable Cause Narrative

The pilot's inadequate preflight inspection, which resulted in a loss of engine power due to water/ice in the fuel system.

Event Information

Type of Event Accident
Event Date 12/23/2010
Event Day of the Week Thursday
Time of Event 1430
Event Time Zone Atlantic Standard Time
Event City Clear
Event State ALASKA
Event Country --
Zipcode of the event site 99704
Event Date Year 2010
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 642000N
Event Location Longitude 1494200W
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 Day
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) -30
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
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) 28120
NTSB Notification Source ANC FAA ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record May 26 2011 10:26AM
User who most recently changed record rows
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N40283
NTSB Number ANC11CA005
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-18-150
Aircraft Series Identifier --
Aircraft Serial Number 18-7509119
Certified Max Gross Weight 1750
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats 2
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 4 2010 12:00AM
Airframe hours since last inspection 134
Airframe Hours 2102
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type C91
Aircraft Owner Name MARK A. KEECH
Aircraft Owner Street Address --
Aircraft Owner City FAIRBANKS
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99708-4634
Operator is an individual? No
Operator Name MARK A. KEECH
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City FAIRBANKS
Operator State AK
Operator Country USA
Operator Zip code 99708-4634
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code --
Departure City Minchumina
Departure State AK
Departure Country USA
Departure Time 1300
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code AK28
Destination City Fairbanks
Destination State AK
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 1 2011 2:02PM
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 --