FTW94LA239

NTSB accident investigation · Air Tractor AT-501 · Marianna, AR · July 19, 1994

Accident · No injuriesLimited investigationFinal report
Date
July 19, 1994, 17:15 local (22:15 UTC)
Place
Marianna, AR
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N6073JAir Tractor AT-501
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 1994
Report
Approved by Office Director
FAA report
19940719018859A
Case key
19114

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

A premature liftoff. Factors were the tall, wet grass and a tail wind component.

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 objectTakeoff - initial climb
Object - tree(s)
Weather condition - tailwindFactor
Lift-off - prematurePilot in commandCause
Terrain condition - wetFactor
Terrain condition - high vegetationFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Takeoff was attempted in a 5 knot quartering tail wind, off of a sod strip that was wet and had tall grass. In addition, the outside air temperature was 90 degrees. The pilot stated that the airplane settled back onto the runway after liftoff. He added all remaining power, increased the flap setting, and began dumping the load. The airplane eventually became airborne, but was unable to clear a tree line at the end of the runway. The airplane collided with the trees and crashed.

Factual narrative

On July 19, 1994, at 1715 central daylight time, an Air Tractor AT-501, N6073J, was destroyed when it collided with trees near Marianna, Arkansas. The airplane, flown by a commercial pilot, was departing on what was to have been a local aerial application flight. There was no flight plan filed and visual meteorological conditions prevailed. The pilot was not injured.

According to the pilot, he was departing to the west from the private sod strip which was oriented 090/270, and measured 2,650 feet by 75 feet. The winds were reported as being from 135 degrees at 5 knots. He stated that the airplane was "making good power" and that he had no indications of any mechanical failure. The operator stated that the strip was wet and the grass long and that coupled with the temperature, the airplane lifted off later than normal. The pilot stated that after lift off, the airplane settled back onto the runway in tall grass and weeds. He further stated that he added all the remaining power, increased the flap setting, and began dumping the load. The airplane eventually became airborne, but was unable to clear a tree line at the end of the runway. The airplane collided with the trees and then impacted the ground.

Aircraft

Registration
N6073J
Reported as
Air Tractor AT-501
Category
Airplane
Serial number
502B-250
Airframe hours
313
Engine
P&W PT6A-34AG, 750 horsepower, turbo prop
Damage
Destroyed
Flight
Aerial application · Part 137
Registered owner
Jack Frost
Airworthiness certificate
Special, Restricted (Special)
Airport
NONE · Gerrand Strip, runway 27, 2,650 × 75 ft, grass/turf

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
39
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
6,627 total · 1,406 in this make and model · 6,569 as pilot in command · 233 in the last 90 days · 113 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
135° at 5 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
90 °F

FAA reports on this event · 1

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