Aircraft Accident/Incident Report

Mosinee, Wisconsin 54455
Thursday, January 2, 1992 13:05 CST

NTSB Narrative Summary Released at Completion of Accident

PILOT WAS CLEARED FOR AN ILS APPROACH AT HIS DESTINATION, AND REQUESTED TO REPORT ALTITUDE OF 3,000 FEET ON THE APPROACH. THIS WAS THE LAST RADIO TRANSMISSION RECEIVED FROM THE PILOT. AIRCRAFT WAS FOUND IN SOFT FIELD SIX MILES FROM THE AIRPORT. LANDING GEAR WAS UP, FLAPS WERE DOWN. FISHERMAN NEARBY REPORTED HEARING THE AIRCRAFT MANEUVERING AT LOW ALTITUDE. HE REPORTED THAT THE ENGINES SOUNDED FINE, BUT THE SOUND WAS CHANGING IN PITCH AND INTENSITY. HE REPORTED THAT GOT QUIET JUST A FEW SECONDS BEFORE HE HEARD THE IMPACT. THE INVESTIGATION REVEALED THAT THERE WAS EVIDENCE OF A FIRE IN THE NOSE BAGGAGE COMPARTMENT. THE CABIN HEATER IS LOCATED IN THE NOSE BAGGAGE COMPARTMENT, AND HAD A RECENT HISTORY OF DISCREPANCIES.

NTSB Probable Cause Narrative

AN INFLIGHT FIRE WITH THE CABIN HEATER AS THE ORIGIN, AND UNSUITABLE TERRAIN IN WHICH TO MAKE A FORCED LANDING. A FACTOR RELATED TO THE ACCIDENT WAS THE SOFT TERRAIN.

Event Information

Type of Event Accident
Event Date 1/2/1992
Event Day of the Week Thursday
Time of Event 1305
Event Time Zone Central Standard Time
Event City MOSINEE
Event State WISCONSIN
Event Country --
Zipcode of the event site 54455
Event Date Year 1992
Event Date Month 1
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1245 Central Standard Time
Direction of event from weather observation facility (degrees) 60
Weather Observation Facility ID CWA
Elevation of weather observation facility 1277
Distance of event from weather observation facility (units?) 6
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 500
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) 1
Air Temperature at event time (in degrees celsius) 0
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 140
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1927
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 46768
Date of most recent change to record Dec 11 2000 2:41PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N500BH
NTSB Number CHI92FA066
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground and In-flight
Aircraft Explosion Ground and In-flight
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-31P
Aircraft Series Identifier PA-31P
Aircraft Serial Number 31P-7530024
Certified Max Gross Weight 7800
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Oct 25 1991 12:00AM
Airframe hours since last inspection 15
Airframe Hours 3520
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BECHER HOPPE ENGINEERS, INC.
Aircraft Owner Street Address 1130 GRAND AVE.
Aircraft Owner City SCHOFIELD
Aircraft Owner State WI
Aircraft Owner Country
Aircraft Owner Zipcode 54476
Operator is an individual? --
Operator Name BECHER HOPPE ENGINEERS, INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1130 GRAND AVE.
Operator City SCHOFIELD
Operator State WI
Operator Country
Operator Zip code 54476
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MSP
Departure City MINNEAPOLIS
Departure State MN
Departure Country
Departure Time 1219
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code CWA
Destination City MOSINEE
Destination State WI
Destination Country
Specific Phase of Flight Approach
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 --