Aircraft Accident/Incident Report

Portales, New Mexico 88130
Wednesday, September 2, 1998 17:40 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot was flying westbound into the sun (275 degrees, 7 degrees above the horizon) during an aerial application pass over a cotton field. There was a circular pivotal sprinkler system which extended from the northern center of the field to the southeast. The pilot said that he looked over to adjust his onboard global positioning system and he struck the sprinkler. The impact separated the left main landing gear and initiated a fire in the right hand forward part of the cockpit. The pilot landed the airplane in the adjacent peanut field and the airplane ground looped during the emergency landing attempt. The airplane was destroyed during the subsequent post landing fire.

NTSB Probable Cause Narrative

The pilot's failure to maintain adequate altitude/clearance during an aerial application. Also causal was the inadvertent ground loop/swerve during the landing.

Event Information

Type of Event Accident
Event Date 9/2/1998
Event Day of the Week Wednesday
Time of Event 1740
Event Time Zone Mountain Daylight Time
Event City PORTALES
Event State NEW MEXICO
Event Country --
Zipcode of the event site 88130
Event Date Year 1998
Event Date Month 9
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1655 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 20
Weather Observation Facility ID CVN
Elevation of weather observation facility 4214
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 23000
Lowest Non-Ceiling Height 12000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 140
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 7077
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1609
NTSB Notification Source --
NTSB Notification Date Sep 3 1998 12:00AM
NTSB Notification Time 734
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:46AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N50620
NTSB Number FTW98LA383
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire In-flight
Aircraft Explosion None
Aircraft Manufacturer's Full Name Air Tractor
Aircraft Model AT-502B
Aircraft Series Identifier AT-502B
Aircraft Serial Number 502B-0457
Certified Max Gross Weight 8000
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 Aug 31 1998 12:00AM
Airframe hours since last inspection 40
Airframe Hours 780
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name KING AG LEASING INC.
Aircraft Owner Street Address RR. 1, BOX 241
Aircraft Owner City SUDAN
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 79371
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 K3AG
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 No
Departure Airport Code NONE
Departure City PRIVATE STRIP
Departure State TX
Departure Country
Departure Time 1715
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code NONE
Destination City SUDAN
Destination State TX
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --