Aircraft Accident/Incident Report

Clarkston, Utah 84305
Thursday, July 12, 1990 6:05 MDT

NTSB Narrative Summary Released at Completion of Accident

THE COMMERCIAL PILOT WAS LANDING ON A GRAVEL ROAD. DURING LANDING ROLL, HE SAW TALL VEGETATION AND ATTEMPTED A GO AROUND. THE RIGHT SPRAY BOOM CONTACTED THE VEGETATION AT LIFT OFF AND THE BOOM WAS STRIPPED OFF THE WING. THE PILOT SAID HE WAS IN FLIGHT, FULL POWER, WITH NO CONTROL OF THE AILERONS. THE PLANE MADE AN UNCOMMANDED LEFT BANK TO 45 DEGREES, AT WHICH POINT THE PILOT REDUCED POWER AND THE PLANE STRUCK THE TERRAIN LEFT WING FIRST. THE PLANE CARTWHEELED AND TORE THE ENGINE, COWLING AND NOSE FRAMEWORK FROM THE FUSELAGE. THE PLANE CAME TO REST FACING OPPOSITE OF THE FLIGHT PATH.

NTSB Probable Cause Narrative

JAMMED AILERONS RESULTANT FROM THE COLLISION WITH CROPS.

Event Information

Type of Event Accident
Event Date 7/12/1990
Event Day of the Week Thursday
Time of Event 605
Event Time Zone Mountain Daylight Time
Event City CLARKSTON
Event State UTAH
Event Country --
Zipcode of the event site 84305
Event Date Year 1990
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID NONE
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 Unknown
Investigator's weather source Pilot
Time of the weather observation 0
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) 15
Air Temperature at event time (in degrees celsius) -18
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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) 1302
NTSB Notification Source --
NTSB Notification Date Jul 12 1990 12:00AM
NTSB Notification Time 1030
Fiche Number and/or location -used to find docket information 42614
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9980P
NTSB Number DEN90LA157
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-36
Aircraft Series Identifier PA-36
Aircraft Serial Number 36-7560093
Certified Max Gross Weight 4400
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name UNKNOWN
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name LARSEN, WAYNE C.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 406 NORTH 1ST WEST
Operator City TREMONTON
Operator State UT
Operator Country
Operator Zip code 84337
Operator Code NQBG
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) Positioning
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code U27
Departure City TREMONTON
Departure State UT
Departure Country
Departure Time 545
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code NONE
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --