Wittman Regional Airport
Aircraft Accident/Incident Report

Oshkosh, Wisconsin 54901
Sunday, November 28, 1993 12:46 CST

NTSB Narrative Summary Released at Completion of Accident

THE ENGINE SUSTAINED A LOSS OF POWER, WHILE THE AIRPLANE WAS IN THE PATTERN FOR LANDING. THE PILOT WAS UNABLE TO REACH THE RUNWAY OF INTENDED LANDING AND MADE A FORCED LANDING IN A FIELD. WHILE MANEUVERING TO LAND, THE AIRPLANE STRUCK A SUSPENDED WIRE AND IMPACTED THE TERRAIN. THE AMATEUR BUILT AIRPLANE WAS NOT EQUIPPED WITH A PROVISION FOR ELIMINATING CARBURETOR ICING. THE TEMPERATURE AT THE TIME OF THE ACCIDENT WAS 28 DEGREES, AND THE DEWPOINT WAS 18 DEGREES. THESE CONDITIONS WERE CONDUSIVE TO THE FORMATION OF CARBURETOR ICE.

NTSB Probable Cause Narrative

THE LACK OF CARBURETOR HEAT FOR THE ENGINE. A FACTOR RELATED TO THE ACCIDENT WAS: THE WEATHER CONDITION, WHICH WAS FAVORABLE FOR FORMATION OF CARBURETOR ICE.

Event Information

Type of Event Accident
Event Date 11/28/1993
Event Day of the Week Sunday
Time of Event 1246
Event Time Zone Central Standard Time
Event City OSHKOSH
Event State WISCONSIN
Event Country --
Zipcode of the event site 54901
Event Date Year 1993
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport WITTMAN REGIONAL
Event Location Nearest Airport ID OSH
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 808
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1248 Central Standard Time
Direction of event from weather observation facility (degrees) 310
Weather Observation Facility ID OSH
Elevation of weather observation facility 808
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 2400
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
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) -2
Dew Point at event time (in degress fahrenheit) -8
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
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 FAA
NTSB Docket Number (internal use) 1681
NTSB Notification Source --
NTSB Notification Date Nov 28 1993 12:00AM
NTSB Notification Time 1310
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:45PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N393PK
NTSB Number CHI94DEP01
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 KROTJE
Aircraft Model KOLB MARK III
Aircraft Series Identifier KOLB MARK
Aircraft Serial Number M3-122
Certified Max Gross Weight 1000
Aircraft Category Airplane
Aircraft Registration Class Unknown
Aircraft is a homebuilt? Yes
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 Continuous Airworthiness
Date of Last Inspection Oct 22 1993 12:00AM
Airframe hours since last inspection 16
Airframe Hours 16
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PETER R. KROTJE
Aircraft Owner Street Address 2990 RIDGEWAY DRIVE
Aircraft Owner City NEENAH
Aircraft Owner State WI
Aircraft Owner Country
Aircraft Owner Zipcode 54956
Operator is an individual? --
Operator Name PETER R. KROTJE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 2990 RIDGEWAY DRIVE
Operator City NEENAHA
Operator State WI
Operator Country
Operator Zip code 54956
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 Yes
Departure Airport Code OSH
Departure City
Departure State
Departure Country
Departure Time 1130
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code OSH
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --