Aircraft Accident/Incident Report

Bozeman, Montana 59715
Friday, December 6, 1985 14:34 MST

NTSB Narrative Summary Released at Completion of Accident

ACCORDING TO PERSONNEL IN THE AREA, THE PLT RADIOED HE HAD SMOKE IN THE COCKPIT AND WAS RETURNING TO GALLANTIN FIELD, HIS DEPARTURE POINT. LATER, THE PLT TRANSMITTED THAT THE ENG LOST TOTAL PWR AND HE WAS MAKING A FORCED LANDING. DURING THE INVESTIGATION, IT WAS ASCERTAINED THE WIRING BETWEEN THE INSTRUMENT PANEL AND THE MAGNETOS HAD BURNED EXTENSIVELY AND THE MAGNETO 'P' LEAD HAD SHORTED OUT.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/6/1985
Event Day of the Week Friday
Time of Event 1434
Event Time Zone Mountain Standard Time
Event City BOZEMAN
Event State MONTANA
Event Country --
Zipcode of the event site 59715
Event Date Year 1985
Event Date Month 12
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 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1435 Mountain Standard Time
Direction of event from weather observation facility (degrees) 252
Weather Observation Facility ID BZN
Elevation of weather observation facility 4458
Distance of event from weather observation facility (units?) 2
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 12000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 34
Air Temperature at event time (in degrees celsius) -4
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 132
Variable Wind Indicator Unknown
Wind Speed (knots) 3
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 3171
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2825
NTSB Notification Source --
NTSB Notification Date Dec 6 1985 12:00AM
NTSB Notification Time 1545
Fiche Number and/or location -used to find docket information 30670
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4101D
NTSB Number DEN86LA040
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 In-flight
Aircraft Explosion None
Aircraft Manufacturer's Full Name HELIO
Aircraft Model H-391B
Aircraft Series Identifier H-391B
Aircraft Serial Number 016
Certified Max Gross Weight 2900
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Dec 6 1985 12:00AM
Airframe hours since last inspection --
Airframe Hours 583
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BOYNE MOUNTAIN LODGE, INC.
Aircraft Owner Street Address
Aircraft Owner City BOYNE FALLS
Aircraft Owner State MI
Aircraft Owner Country
Aircraft Owner Zipcode 49713
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 BZN
Departure City BOZEMAN
Departure State MT
Departure Country
Departure Time 1426
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code
Destination City PORTLAND
Destination State OR
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --