Aircraft Accident/Incident Report

Sedan, New Mexico 88436
Thursday, April 24, 2003 9:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot said the airplane refueling process took a very long time, due to the slow rate of fuel transfer. He drained 2 to 3 gallons of fuel from each tank to check for contamination. While descending from 1,200 feet to 150 feet agl, he looked down at a map on his lap to verify which field was to be sprayed. The pilot said the engine began losing power, dropping from 80 pounds of torque to 40 pounds of torque. He noticed the loss of power when he attempted to level off, and the airplane was near a stall. He dumped the chemical, and pushed the power lever full forward, with no increase in power noted. The pilot performed a forced landing straight ahead due to his low altitude, and impacted a rotating irrigation system in a wheat field. The airplane was substantially damaged. Postimpact examination revealed water in the fuel filters on the airplane's engine and on the refueling system. Water was also found in the airplane's right fuel tank and in the source fuel tank.

NTSB Probable Cause Narrative

the nonmechanical partial loss of engine power due to water contamination of the fuel. Contributing factors include the lack of suitable terrain for a forced landing (due to his low altitude), and the irrigation system (object) that was impacted.

Event Information

Type of Event Accident
Event Date 4/24/2003
Event Day of the Week Thursday
Time of Event 930
Event Time Zone Mountain Daylight Time
Event City Sedan
Event State NEW MEXICO
Event Country --
Zipcode of the event site 88436
Event Date Year 2003
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 360705N
Event Location Longitude 1030352W
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 753 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID DHT
Elevation of weather observation facility 3989
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 260
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.66
Density Altitude (feet) 4595
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 15104
NTSB Notification Source FAA COMM CTR
NTSB Notification Date May 7 2003 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2004 8:14AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Albuquerque, NM

Aircraft Involved

Aircraft #1

Aircraft Registration Number N318BR
NTSB Number DEN03LA077
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Air Tractor
Aircraft Model AT-502
Aircraft Series Identifier --
Aircraft Serial Number 502-0172
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 Jan 2 2003 12:00AM
Airframe hours since last inspection --
Airframe Hours 4556
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Riddell Flying Service Inc.
Aircraft Owner Street Address PO Box 2482
Aircraft Owner City West Helena
Aircraft Owner State AR
Aircraft Owner Country USA
Aircraft Owner Zipcode 72390
Operator is an individual? Yes
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 --
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
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 No
Departure Airport Code NONE
Departure City Dalhart
Departure State TX
Departure Country USA
Departure Time 910
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 Maneuvering - aerial application
Report sent to ICAO? No
Evacuation occurred --
Date of most recent change to record Jan 16 2004 2:22PM
User who most recently changed record MCBM
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --