Aircraft Accident/Incident Report

Toston, Montana 59643
Wednesday, June 18, 1986 8:30 MDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT REPORTS THAT HE TOOK OFF FROM AN AG STRIP ABOUT A MILE FROM THE FLD BEING TREATED AND WAS MAKING A TURN-AROUND AFTER HIS SECOND SWATH RUN WHEN THE ACFT BEGAN TO SETTLE. HE DUMPED HIS CHEM BUT THE ACFT CONTINUED TO SETTLE AND IMPACTED THE GROUND. THE PLT SAID THE TURN-AROUND WAS BEING MADE BESIDE A BUTTE AND HE ENCOUNTERED 'BAD AIR.' THE DENSITY ALT AT THE TIME AND PLACE OF THE ACDT IS CALCULATED TO BE ABOUT 5,000 FT. THE PLT SAID THERE WAS NO MALFUNCTION OF THE ACFT OR ENG.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/18/1986
Event Day of the Week Wednesday
Time of Event 830
Event Time Zone Mountain Daylight Time
Event City TOSTON
Event State MONTANA
Event Country --
Zipcode of the event site 59643
Event Date Year 1986
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 0
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
Time of the weather observation 750 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 290
Weather Observation Facility ID BZN
Elevation of weather observation facility 4458
Distance of event from weather observation facility (units?) 22
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 20000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 270
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) 29
Density Altitude (feet) 5000
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) 973
NTSB Notification Source --
NTSB Notification Date Jun 18 1986 12:00AM
NTSB Notification Time 1145
Fiche Number and/or location -used to find docket information 31324
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N82539
NTSB Number DEN86LA164
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-25-260
Aircraft Series Identifier PA-25-260
Aircraft Serial Number 7756054
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 22 1986 12:00AM
Airframe hours since last inspection 133
Airframe Hours 1806
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BOYD J. MORGAN
Aircraft Owner Street Address 18866 DRY CREEK RD.
Aircraft Owner City BELGRADE
Aircraft Owner State MT
Aircraft Owner Country
Aircraft Owner Zipcode 59714
Operator is an individual? --
Operator Name QUALITY SPRAYING
Operator Same as Owner? No
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 Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 825
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
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 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --