Aircraft Accident/Incident Report

Roseau, Minnesota 56751
Wednesday, June 19, 1985 20:15 CDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT INTENTIONALLY GROUND LOOPED THE ACFT DURING A FORCED LANDING TO AVOID OBSTACLES FOLLOWING A LOSS OF POWER EN ROUTE. APRX 1 1/2 HRS INTO THE FLT THE PLT NOTICED AN ENGINE ROUGHNESS FOLLOWED BY AN INCREASE IN OIL TEMP WHICH RETURNED TO NORMAL SHORTLY THEREAFTER. ABOUT 1 HR LATER, A 25 RPM DECREASE AND ENGINE ROUGHNESS WAS EXPERIENCED. A CONTINUED DECREASE IN RPM WAS EXPERIENCED THROUGHOUT THE NEXT 1/2 HR AND THE PLT LEANED THE MIXTURE AND TURNED THE CARB HEAT ON AND OFF IN AN ATTEMPT TO REGAIN POWER. A TOTAL LOSS OF POWER WAS THEN EXPERIENCED AND THE FORCED LANDING WAS INITIATED. AN ICING PROBABILITY CHART INDICATES THE EXISTING TEMP (70 DEGS F) AND THE DEW POINT (55 DEGS F) WHERE CONDUCIVE TO CARB ICE. NO MECHANICAL FAILURE/MALFUNCTION WAS FOUND.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/19/1985
Event Day of the Week Wednesday
Time of Event 2015
Event Time Zone Central Daylight Time
Event City ROSEAU
Event State MINNESOTA
Event Country --
Zipcode of the event site 56751
Event Date Year 1985
Event Date Month 6
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 Partial - limited by pilot
Investigator's weather source Pilot
Time of the weather observation 2015
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
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 NTSB
NTSB Docket Number (internal use) 842
NTSB Notification Source --
NTSB Notification Date Jun 19 1985 12:00AM
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 28069
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 N9070K
NTSB Number CHI85LA260
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 STINSON
Aircraft Model 108-1
Aircraft Series Identifier 108-1
Aircraft Serial Number 2070
Certified Max Gross Weight 2400
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 2704
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name RONALD C. MOSMAN
Aircraft Owner Street Address 3821 GARFIELD SOUTH
Aircraft Owner City MINNEAPOLIS
Aircraft Owner State MN
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 ANE
Departure City BLAINE
Departure State MN
Departure Country
Departure Time 1715
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code ROX
Destination City ROSEAU
Destination State MN
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --