Bismark Municipal Airport
Aircraft Accident/Incident Report

Bismarck, North Dakota 58501
Thursday, February 6, 1986 11:37 CDT

NTSB Narrative Summary Released at Completion of Accident

THE ACFT WAS OBSERVED DESCENDING OUT OF A LOW CEILING WHEN IT SUDDENLY MADE AN ABRUPT LEFT TURN. ENGINE NOISE SEEMED TO INCREASE MOMENTARILY AND THEN THE NOSE OF THE ACFT DROPPED TO A NEAR VERTICAL POSITION. THE TWIN ENGINE ACFT CRASHED INTO A VACANT HOUSE TRAILER DESTROYING THE ACFT. SUBSEQUENT EXAMINATION OF THE WRECKAGE REVEALED 2 FUEL INJECTOR NOZZLES OF THE LEFT ENGINE WERE CLOGGED WITH FOREIGN MATERIAL AND CONTAMINATION WAS FOUND IN THE FUEL CONTROL UNIT OF THE SAME ENGINE.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 2/6/1986
Event Day of the Week Thursday
Time of Event 1137
Event Time Zone Central Daylight Time
Event City BISMARCK
Event State NORTH DAKOTA
Event Country --
Zipcode of the event site 58501
Event Date Year 1986
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport BISMARK MUNICIPAL
Event Location Nearest Airport ID BIS
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 300
Airport Elevation 1650
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1143 Central Standard Time
Direction of event from weather observation facility (degrees) 300
Weather Observation Facility ID BIS
Elevation of weather observation facility 1677
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 400
Lowest Non-Ceiling Height 400
Sky/Lowest/Cloud Conditions Partial Obscuration
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) -4
Dew Point at event time (in degress fahrenheit) -4
Wind Direction (degrees magnetic) 290
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 234
Intensity of Precipitation Unknown
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) 1416
NTSB Notification Source --
NTSB Notification Date Feb 6 1986 12:00AM
NTSB Notification Time 1135
Fiche Number and/or location -used to find docket information 31815
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N55654
NTSB Number DEN86FA075
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR/IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-34-200
Aircraft Series Identifier PA-34-200
Aircraft Serial Number 34-7350235
Certified Max Gross Weight 4200
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 Annual
Date of Last Inspection Aug 20 1985 12:00AM
Airframe hours since last inspection 51
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DENNIS W. GRINAKER/THOM BRYON
Aircraft Owner Street Address RT. 1
Aircraft Owner City HORACE
Aircraft Owner State ND
Aircraft Owner Country
Aircraft Owner Zipcode
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 BIS
Departure City BISMARCK
Departure State ND
Departure Country
Departure Time 1131
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code FAR
Destination City FARGO
Destination State ND
Destination Country
Specific Phase of Flight Descent
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 31
Runway Length 8788
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --