CEN25LA313

NTSB accident investigation · Air Tractor AT-502 · Lawrenceville, IL · August 10, 2025

Accident · Minor injuriesClass 3 · LimitedPreliminary report
Date
August 10, 2025, 13:21 local (18:21 UTC)
Place
Lawrenceville, IL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9193VAir Tractor AT-502
Defining event
Takeoff: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Investigation ongoing
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA
FAA report
20250810020049A
Case key
200746

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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Preliminary report

What NTSB knew early in the investigation. It may change in the final report.

On August 10, 2025, about 1321 central daylight time, an Air Tractor AT-502, was substantially damaged when it was involved in an accident near Lawrenceville, Illinois. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 137 agricultural flight. The pilot stated he was taking off with a load of product and everything seemed normal until he went to rotate; at which time the airplane did not seem to be making full power. The pilot recalled looking down at the torque gauge and saw 1,400 not the usual 1,700 and he immediately pushed forward on the throttle. He attempted to jettison the load of product, but the rubber handgrip had migrated upward on the control handle preventing easy access to the switch that normally protruded from the handgrip. He described “forcing the airplane” into the air out of ground effect to gain enough altitude to clear the road and any passing traffic off the end of the runway. Unable to maintain altitude the airplane impacted the moisture laden bean field on the opposite side of the road and came to rest inverted. The impact resulted in substantial damage to the fuselage, empennage, and wings. The airplane was recovered back to the airport and will be examined further at a later date.

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.

Aircraft

Registration
N9193V
Reported as
Air Tractor AT-502
Category
Airplane
Serial number
502-0231
Built
1994
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Klein Flying Services
Registered owner
Murtagh Flying Service Inc.
Departed
Westport, IL
Destination
Same as departure
Airport
IL16

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.

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 70 °F
Altimeter
30.13 inHg
Observed at
KLWV, 5 nm away
METAR
KLWV 101753Z AUTO 21006KT 10SM CLR 31/21 A3013 RMK AO2 SLP199 T03110211 10311 20222 55001

FAA reports on this event · 1

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