Aircraft Accident/Incident Report

Powderville, Montana 59301
Thursday, May 10, 1990 9:00 MDT

NTSB Narrative Summary Released at Completion of Accident

A PRIVATE PLT WAS PERFORMING AN AERIAL APPLICATION FLIGHT NEAR HIS HOME. THE PLT SAID THAT THE FLIGHT WAS ON DESCENT INTO A FIELD FOR A SPRAY PASS. HE SAID THE ENTRY WAS TOO STEEP AND THE PLANE STRUCK THE TERRAIN. HE REPORTED THAT THE LEFT WHEEL STRUCK FIRST AND DAMAGED THE STRUT AND LEFT WING.

NTSB Probable Cause Narrative

PILOT FAILED TO MAINTAIN TERRAIN CLEARANCE DURING DESCENT ON AN AERIAL APPLICATION SWATH RUN, RESULTING IN AN IN FLIGHT COLLISION WITH THE TERRAIN. THAT THE PILOT MISJUDGED THE PULL UP ALTITUDE IS CONSIDERED A CONTRIBUTING FACTOR.

Event Information

Type of Event Accident
Event Date 5/10/1990
Event Day of the Week Thursday
Time of Event 900
Event Time Zone Mountain Daylight Time
Event City POWDERVILLE
Event State MONTANA
Event Country --
Zipcode of the event site 59301
Event Date Year 1990
Event Date Month 5
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 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) 50
Air Temperature at event time (in degrees celsius) 16
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) 189
NTSB Notification Source --
NTSB Notification Date May 14 1990 12:00AM
NTSB Notification Time 815
Fiche Number and/or location -used to find docket information 40909
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 N62672
NTSB Number DEN90LA108
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 PIPER
Aircraft Model PA-18-150
Aircraft Series Identifier PA-18-150
Aircraft Serial Number 18-7809104
Certified Max Gross Weight 1750
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 2
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 CHARLES W. MILES
Aircraft Owner Street Address POWDERVILLE STAGE
Aircraft Owner City MILES CITY
Aircraft Owner State MT
Aircraft Owner Country
Aircraft Owner Zipcode 59301
Operator is an individual? --
Operator Name W.L. RANCH CO.
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 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) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 900
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code NONE
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
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 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --