Aircraft Accident/Incident Report

Sugar Grove, Illinois 60554
Sunday, February 1, 1998 15:15 CST

NTSB Narrative Summary Released at Completion of Accident

The pilot said the airplane's '...engine stopped...' during initial climbout from takeoff. He said the fuel boost pump was 'ON' and that he checked the throttle and mixture for proper position. The pilot said he turned to avoid colliding with power lines and a road. He said the engine started and ran for about 3-seconds when the airplane was about 25 ft above the ground. The pilot said he banked the airplane toward runway 09, and the engine stopped a second time. He said he '...leveled the wings and let [the] plane settle in.' On-scene investigation revealed no preaccident mechanical anomaly with the airframe or engine that would have prevented flight. The spark plugs were black and sooty. The pilot said moderate rain was falling, and the temperature and dew point were 36 and 34 deg Fahrenheit, respectively. According to icing probability charts, the airplane was operating in conditions conducive to severe carburetor icing at cruise power. The airplane did not have a conventional carburetor heat system. Heat for the carburetor was obtained from the engine oil cooler that was about 14-inches forward and above the carburetor. Air flowing through the oil cooler was used to prevent carburetor ice by heating the carburetor's exterior.

NTSB Probable Cause Narrative

inadequate design of the carburetor heat system by the manufacturer, and subsequent carburetor ice, which resulted in loss of engine power and a forced landing. Factors relating to the accident were: carburetor icing (weather) conditions, and obstructions and uneven terrain in the emergency landing area.

Event Information

Type of Event Accident
Event Date 2/1/1998
Event Day of the Week Sunday
Time of Event 1515
Event Time Zone Central Standard Time
Event City SUGAR GROVE
Event State ILLINOIS
Event Country --
Zipcode of the event site 60554
Event Date Year 1998
Event Date Month 2
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1518 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID ARR
Elevation of weather observation facility 706
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 2300
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 4
Air Temperature at event time (in degrees celsius) 2
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Moderate
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 8
NTSB Notification Source --
NTSB Notification Date Feb 1 1998 12:00AM
NTSB Notification Time 1711
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 10:45AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N830JT
NTSB Number CHI98LA089
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 CHINESE A/F AERO IND DEV CTR
Aircraft Model PL-1B
Aircraft Series Identifier PL-1B
Aircraft Serial Number 61-1042
Certified Max Gross Weight --
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 --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Dec 8 1997 12:00AM
Airframe hours since last inspection --
Airframe Hours 1006
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name JOSEPH L. LESCH
Aircraft Owner Street Address 1012 COLLEGE AVENUE
Aircraft Owner City WHEATON
Aircraft Owner State IL
Aircraft Owner Country
Aircraft Owner Zipcode 60187
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 Yes
Departure Airport Code ARR
Departure City
Departure State
Departure Country
Departure Time 1512
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code ARR
Destination City
Destination State
Destination Country
Specific Phase of Flight Emergency 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 --