FTW04LA156

NTSB accident investigation · Air Tractor AT-502 · Joiner, AR · June 8, 2004

Accident · Serious injuriesLimited investigationFinal report
Date
June 8, 2004, 12:45 local (17:45 UTC)
Place
Joiner, AR
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N9151CAir Tractor AT-502
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
Air Tractor, Inc., FAA Flight Standards District Office
FAA report
20040608014409A
Case key
59402

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 and altitude from terrain while maneuvering during an aerial application.

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 terrain/waterManeuvering - aerial application
Aircraft control - not maintainedPilot in commandCause
Clearance - not maintainedPilot in commandCause
In flight collision with terrain/waterManeuvering - aerial application
Terrain condition - ground

Analysis

The single-engine agricultural airplane impacted terrain while maneuvering during an aerial application flight. The operator reported that the pilot was spraying various fields throughout the morning for Boll Weevil eradication. A review of the SATLOC GPS flight data card that was installed in the airplane, showed that the airplane had been spraying approximately two miles west of the accident site, and the proceeded to maneuver in the general area for several minutes. The flight data record ended approximately two miles north of the accident site. There were no eyewitnesses to the accident. No pre-impact mechanical or structural anomalies were discovered at the accident site.

Factual narrative

On June 8, 2004, approximately 1245 central daylight time, an Air Tractor AT-502 single-engine agricultural airplane, N9151C, registered to a private individual and operated by Kuntz Aviation of Carthage, Mississippi, was destroyed when it impacted terrain while maneuvering in the vicinity of Joiner, Arkansas. The commercial pilot, who was the sole occupant of the airplane, sustained serious injuries. Visual meteorological conditions prevailed, and a flight plan was not filed for the Title 14 Code of Federal Regulations Part 137 aerial application flight. The local flight originated from the Price Field Airport (80AR), near Joiner, Arkansas, approximately 0940.

Despite attempts made by the investigator-in-charge (IIC), a Pilot/Operator Aircraft Accident Form (NTSB Form 6120.1/2) was not received from the operator.

The operator reported that the pilot was spraying various fields throughout the morning for Boll Weevil eradication. A review of the SATLOC GPS flight data card that was installed in the airplane, showed that the airplane had been spraying approximately two miles west of the accident site, and the proceeded to manuever in the general area for several minutes. The flight data record ended approximately two miles north of the accident site. There were no eyewitnesses to the accident.

According to information provided by an Federal Aviation Administration (FAA) inspector who responded to the accident site, the airplane impacted terrain approximately two miles east of a cotton field where the pilot was spraying. The airplane came to rest on its right side, on a magnetic heading of 125 degrees. Examination of the wreckage revealed that both wings were separated from the fuselage. The leading edge of the right wing was crushed aft to the main wing spar, and the outboard 3 feet of the right wing was torn open aft of the main wing spar. Both the flap and aileron remained attached to the right wing. The leading edge of the left wing was crushed aft of the main wing spar and was torn open along the span of the wing. The flap and aileron were separated from the left wing. Flight control continuity was established from the cockpit control column aft to the empennage, and to the wing attach points.

The front of the fuselage structure and forward area of the cockpit were destroyed and the fuselage structure aft of the cockpit was buckled. Both main landing gears were separated from the fuselage. The vertical stabilizer and rudder remained attached to the empennage with minor damage. The left horizontal stabilizer and elevator were bent upward approximately 30-degrees outboard of the lift strut. The outboard tip of the right horizontal stabilizer and elevator was bent upward. Flight control continuity was established aft to the empennage.

The engine was separated from the fuselage and was located approximately 45 feet beyond the main wreckage. The forward portion of the engine case displayed compression buckling and twisting opposite of the direction of propeller rotation. The propeller hub was separated from the engine. One propeller blade was separated from the hub assembly and the remaining two propeller blades remained attached to the hub assembly, both of which were curled aft. No pre-impact mechanical or structural anomalies were discovered at the accident site.

Weather at Millington Municipal Airport (NQA), near Millington, Tennessee, approximately 25 nautical miles southeast of the accident site, at 1250, reported winds from 190 degrees at 4 knots, visibility 10 statute miles, sky clear, temperature 91 degrees Fahrenheit, dew point 73 degrees Fahrenheit, and an altimeter setting of 30.13 inches of Mercury.

Aircraft

Registration
N9151C
Reported as
Air Tractor AT-502
Category
Airplane
Serial number
502-0222
Engine
Pratt & Whitney PT6A-SER, 680 horsepower, turbo prop
Damage
Destroyed
Flight
Aerial application · Part 137
Registered owner
Kuntz Aviation
Airworthiness certificate
Special, Restricted (Special)
Departed
80AR · Joiner, AR
Airport
NQA · Millington Municipal Airport

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
Injuries
Serious
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 73 °F
Altimeter
30.12 inHg
Observed at
NQA, 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.