FTW02LA256

NTSB accident investigation · Air Tractor AT-301 · Altus, OK · September 14, 2002

Accident · Minor injuriesLimited investigationFinal report
Date
September 14, 2002, 13:00 local (18:00 UTC)
Place
Altus, OK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N23736Air Tractor AT-301
Weather
Visual (VMC) · Day
Status
Completed · report May 30, 2003
Report
Approved by Office Director
Parties
Federal Aviation Administration (FSDO)
FAA report
20020914023939A
Case key
55692

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

the pilot's failure to maintain clearance with electrical wires while maneuvering during an aerial application flight.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectManeuvering - aerial application
Clearance - not maintainedPilot in commandCause
Object - wire,transmission

Analysis

The agricultural pilot was spraying malathion to a field and was attempting to fly the airplane between electrical wires when the vertical stabilizer contacted the electrical wires. A section of the vertical stabilizer and rudder separated from the airplane. During the ensuing forced landing to a wheat field the airplane cartwheeled and came to rest inverted.

Factual narrative

On September 14, 2002, at 1300 central daylight time an Air Tractor AT-301 agricultural airplane, N23736, was substantially damaged when it collided with a power line while maneuvering near Altus, Oklahoma. The airplane was registered to and operated by Jackson County Spraying Service, Inc., of Altus, Oklahoma. The commercial pilot, sole occupant of the airplane, sustained minor injuries. Visual meteorological conditions prevailed, and a flight plan was not filed for the 14 Code of Federal Regulations Part 137 aerial application flight. The local flight originated at 0700 from the Olustee Municipal Airport, Altus, Oklahoma.

According to the pilot, he was spraying malathion to a field and was attempting to fly between electrical wires when the vertical stabilizer contacted electrical wires. A section of the vertical stabilizer and rudder separated from the airplane. During the ensuing forced landing to a wheat field the airplane cartwheeled and came to rest inverted.

Aircraft

Registration
N23736
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0427
Airframe hours
6,200
Engine
Pratt & Whitney 1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Jackson County Spraying Service, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 2, 2002 · 400 hours before
Departed
F09 · Olustee, OK

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
14,000 total · 11,000 in this make and model · 13,900 as pilot in command · 225 in the last 90 days · 125 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 66 °F
Altimeter
29.98 inHg
Observed at
HBR, 25 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.