Private Dirt Strip Airport
Aircraft Accident/Incident Report

Imperial, California 92251
Monday, March 23, 1998 17:00 PST

NTSB Narrative Summary Released at Completion of Accident

The operator reported that the pilot attempted an unsuccessful takeoff from a 5,280-foot dirt strip. The operator reported that after the takeoff attempt, the aircraft struck an embankment just beyond the end of the runway and came to rest in a cotton field. Reported temperature at the time of the accident was 91 degrees Fahrenheit, and the density altitude was computed at 2,300 feet. The pilot stated that the aircraft had approximately 280 to 300 gallons of pesticide onboard and full fuel. He reported that the aircraft seemed sluggish and would not lift off the runway. The pilot stated that he made an unsuccessful attempt to jettison the load prior to the collision with the berm. The pilot reported that he attempted the takeoff from runway 26. The Imperial airport, 5 miles north-northeast, was reporting winds from 120 degrees at 11 knots at the time. A witness to the accident reported that as the aircraft went by him it was very loud and sounded as if it was operating at full power. The FAA inspected the aircraft on-scene and established flight control and engine continuity. No further discrepancies were noted. The pilot stated that there were no mechanical difficulties with the aircraft.

NTSB Probable Cause Narrative

The pilot's selection of the wrong runway, which resulted in a downwind takeoff attempt, and, his failure to obtain/maintain a proper airspeed during the takeoff sequence. The aircraft's gross weight and the prevailing density altitude were factors in the accident.

Event Information

Type of Event Accident
Event Date 3/23/1998
Event Day of the Week Monday
Time of Event 1700
Event Time Zone Pacific Standard Time
Event City IMPERIAL
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92251
Event Date Year 1998
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport PRIVATE DIRT STRIP
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation -100
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1500 Pacific Standard Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID IPL
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PST
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) 25
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 120
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 2300
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) 559
NTSB Notification Source --
NTSB Notification Date Mar 23 1998 12:00AM
NTSB Notification Time 1735
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Feb 16 2001 11:57AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7301P
NTSB Number LAX98LA128
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 Air Tractor
Aircraft Model AT301
Aircraft Series Identifier AT301
Aircraft Serial Number 301-0588
Certified Max Gross Weight 5000
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 100 Hour
Date of Last Inspection Mar 27 1997 12:00AM
Airframe hours since last inspection 5
Airframe Hours 8000
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name VISCO FLYING CO.
Aircraft Owner Street Address 1102 AIRPORT RD. BOX 68
Aircraft Owner City IMPERIAL
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 92251
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 LSUG
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 1700
Departure Time Zone PST
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 --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 20 2001 6:29PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 26
Runway Length 5280
Runway Width 80
Sight Seeing flight No
Air Medical Flight No
Medical Flight --