Aircraft Accident/Incident Report

Sherwood, North Dakota 58782
Tuesady, April 11, 2000 18:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The student pilot said that he was flying over his home to look for an area on which to put in an airstrip. 'When I was making an approach at one location, I added power to the plane and there was no power.' The pilot said he checked the carburetor heat and it was on. The pilot elected to set the airplane down on the field. 'As the plane was slowing down, the wheels dropped through the snow and the plane flipped on its back.' Examination of the airplane revealed no anomalies. The temperature and dew point reported at Minot International Airport, Minot, North Dakota (212 degrees and 51 nautical miles from the accident site) were 37 degrees Fahrenheit (F), and 19 degrees F. According to the DOT/FAA Publication CT- 82/44, Light Airplane Piston Engine Carburetor Ice Detector/Warning Device Sensitivity/Effectiveness, June 1982, with a temperature of 37 degrees F, and a dew point of 19 degrees F, the Carburetor Icing Probability Chart shows icing occurring at glide and cruise power.

NTSB Probable Cause Narrative

carburetor ice and the pilot's improper decisions when to use carburetor heat and to perform a soft field landing. Factors relating to this accident were the improper use of carburetor heat, the soft field landing attempt, and the snow covered field.

Event Information

Type of Event Accident
Event Date 4/11/2000
Event Day of the Week Tuesday
Time of Event 1800
Event Time Zone Central Daylight Time
Event City SHERWOOD
Event State NORTH DAKOTA
Event Country --
Zipcode of the event site 58782
Event Date Year 2000
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1748 Central Daylight Time
Direction of event from weather observation facility (degrees) 158
Weather Observation Facility ID MOT
Elevation of weather observation facility 1715
Distance of event from weather observation facility (units?) 42
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 15000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 3
Dew Point at event time (in degress fahrenheit) -7
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 127
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 444
NTSB Notification Source FAA
NTSB Notification Date Apr 12 2000 12:00AM
NTSB Notification Time 1441
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record May 25 2001 4:45AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5548B
NTSB Number CHI00LA109
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-11
Aircraft Series Identifier PA-11
Aircraft Serial Number 11-1053
Certified Max Gross Weight 1200
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
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 Annual
Date of Last Inspection Feb 9 2000 12:00AM
Airframe hours since last inspection 20
Airframe Hours 1482
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ARLYN KEITH
Aircraft Owner Street Address 3755 COUNTY ROAD 2
Aircraft Owner City SHERWOOD
Aircraft Owner State ND
Aircraft Owner Country
Aircraft Owner Zipcode 58782
Operator is an individual? --
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? No
Certified for Part 133 or 137 Operation Unknown
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 D64
Departure City WESTHOPE
Departure State ND
Departure Country
Departure Time 1630
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 25 2001 4:09AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --