MIA97LA195

NTSB accident investigation · Air Tractor AT-502 · Tunica, MS · June 24, 1997

Accident · No injuriesLimited investigationFinal report
Date
June 24, 1997, 16:30 local (21:30 UTC)
Place
Tunica, MS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N45461Air Tractor AT-502
Weather
Visual (VMC) · Day
Status
Completed · report January 7, 1998
Report
Approved by Office Director
FAA report
19970624015929A
Case key
38298

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 pilots poor preflight planning preparation for attempting to takeoff with a tailwind and with the hopper loaded 3/4 full during a 93degree F., day at a density altitude of 2,400 feet.

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/waterTakeoff
Preflight planning/preparation - poorPilot in commandCause
Wind information - disregardedPilot in commandCause

Analysis

The pilot was attempting to takeoff with the airconditioner on and with a 5 knot tailwind on a 93 degree F., day. He applied takeoff power and reported normal power and acceleration for the temperature and wind conditions. At rotation, the airplane became airborne momentarily then touched down in a bean field. The airplane then bounced and he initiated dumping of the load of chemical but the airplane descended into the field. He stated to an FAA inspector that the airplane was probably over loaded for the existing wind and temperature conditions and there was no engine failure or malfunction.

Factual narrative

On June 24, 1997, about 1630 central daylight time, an Air Tractor AT-502, N45461, registered to the Tunico, Inc., collided with terrain during a takeoff from an airstrip used for agricultural operations near Tunica, Mississippi. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 CFR Part 137 aerial application flight. The airplane was substantially damaged and the commercial-rated pilot was not injured. The flight was originating at the time of the accident.

The pilot stated that to an FAA inspector that the air conditioner was on during the attempted takeoff from the southwest oriented dirt runway. The wind was from the southeast at 5 knots at the time. He applied power to takeoff and observed normal power and acceleration for the outside temperature. At rotation the airplane became airborne momentarily then settled to the ground in a bean field. The airplane then bounced into the air and at this time he activated the dump valve to dump the 3,000-pound chemical load. The airplane descended into the bean field and came to rest. The pilot further stated to the FAA inspector that the airplane was probably overloaded for the wind and temperature conditions and there was no engine failure or malfunction.

A weather observation taken about 21 minutes after the accident from an airport located about 31 nautical miles from the accident site reported that the temperature was 93 degrees F, and the altimeter setting was 30.00 inHg. The density altitude was calculated to be 2,400 feet based on this information and a elevation of 200 feet at the accident site.

Aircraft

Registration
N45461
Reported as
Air Tractor AT-502
Category
Airplane
Serial number
502-0124
Airframe hours
4,016
Engine
P&W PT6A-34AG, 750 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Tunica Air Service, Inc.
Registered owner
Tunico, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 24, 1997 · 151 hours before
Departed
NONE
Airport
Dubbs, runway 23, 1,700 × 40 ft, dirt

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
45
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
10,607 total · 4,015 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 6 knots
Visibility
9 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 70 °F
Altimeter
30.00 inHg
Observed at
MEM, 31 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.