CEN21LA254

NTSB accident investigation · Air Tractor AT-602 · Drew, MS · June 4, 2021

Accident · Minor injuriesClass 3 · LimitedFinal report
Date
June 4, 2021, 16:25 local (21:25 UTC)
Place
Drew, MS
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N51037Air Tractor AT-602
Defining event
Takeoff: Unknown or undetermined
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA
FAA report
20210604007019A
Case key
103225

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

On this page

Probable cause

A loss of control during takeoff for reasons that could not be determined.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Unknown/Not determinedAir Tractor AT-602: 17 casesAll aircraft: 9,295 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot stated that the airplane had just been loaded with fertilizer for an aerial application flight and that the fuel tanks were about ¾ full. The last memory he had of the event was the start of the takeoff roll. There were no witnesses to the accident. A ground scar was present along the runway with the left navigation light embedded in the scar. The airplane sustained substantial damage to wings, ailerons, and rudder. Flight control continuity was established from the control stick to the aileron and elevator control surfaces and from the rudder pedals to the rudder. The tailwheel lock was found engaged and a functional test revealed no anomalies. Engine control continuity was established from the power quadrant to the engine and allowed for unrestricted movement of the power lever, propeller control lever, and condition lever. No anomalies or malfunctions were found that would have precluded normal operation. The reason for the loss of control during takeoff could not be determined based on the available information.

Factual narrative

On June 4, 2021, about 1625 eastern daylight time, an Air Tractor AT602, N51037, was substantially damaged when it was involved in an accident near Drew, Mississippi. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 137 aerial application flight. The pilot stated that the airplane had just been loaded with about 4,000 lbs of dry fertilizer for the application flight and that the fuel tanks were about ¾ full (150 gal). The last memory he had of the flight was the start of the takeoff roll. There were no witnesses to the accident. A ground scar was present along the runway with the left navigation light embedded in the scar. The airplane sustained substantial damage to wings, ailerons, and rudder. Flight control continuity was established from the control stick to the aileron and elevator control surfaces and from the rudder pedals to the rudder. The tailwheel lock was found engaged and a functional test revealed no anomalies. Engine control continuity was established from the power quadrant to the engine and allowed for unrestricted movement of the power lever, propeller control lever, and condition lever. The N1 section of the engine was inspected using a borescope and no anomalies were noted. All 5 blades of the propeller were bent aft and the pitch links for the #2 and #3 blades were fractured, consistent with the engine producing power at the time of impact.

Aircraft

Registration
N51037
Reported as
Air Tractor AT-602
Category
Airplane
Serial number
602-0464
Built
1997
Airframe hours
9,246.1
Engine
Pratt & Whitney PT6A-60AG, 1,020 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Boyle Flying Service Inc
Registered owner
Boyle Flying Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · December 1, 2020 · 174 hours before
Destination
Same as departure
Airport
N/A
Equipment
Stall warning system

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
29
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
March 24, 2021
Seat
Single
Restraint
5-point
Flight hours
6,500 total · 140 in this make and model · 6,250 as pilot in command · 175 in the last 90 days · 90 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
110° at 4 knots
Visibility
10 statute miles
Temperature
84 °F, dew point 61 °F
Altimeter
30.02 inHg
Observed at
KRNV, 7 nm away
METAR
KRNV 041915Z AUTO 11004KT 10SM CLR 29/16 A3002 RMK AO2 T02940155

Docket · 4

The files NTSB released with the investigation on August 25, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 MB in all.

FAA reports on this event · 1

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

Other investigations on N51037 · 1

Matched to the same aircraft by N-number and date.