CEN21LA283

NTSB accident investigation · Air Tractor AT-502B · Edwardsburg, MI · June 20, 2021

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
June 20, 2021, 13:37 local (17:37 UTC)
Place
Edwardsburg, MI
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8523ZAir Tractor AT-502B
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration; GRR FSDO
FAA report
20210620007959A
Case key
103306

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

The pilot’s failure to identify rising terrain and to maintain terrain clearance from trees during an aerial application pass that resulted in an in-flight collision with trees and terrain.

Findings · 3

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.

Terrain: sloped/uneven terrainEnvironmental issues › Physical environment · Contributed to outcomeAir Tractor AT-502B: 1 caseAll aircraft: 270 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedAir Tractor AT-502B: 19 casesAll aircraft: 1,310 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 reported that while conducting an aerial application pass over a field, the airplane stuck trees and subsequently impacted the ground. The airplane sustained substantial damage to the fuselage, both wings, and empennage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operations. The pilot reported that the field had rising terrain toward its southern edge and as the airplane approached the southern edge, the airplane was unable to climb above the rising terrain. It is likely the pilot failed to identify the rising terrain in time to clear the trees.

Aircraft

Registration
N8523Z
Reported as
Air Tractor AT-502B
Category
Airplane
Serial number
502B-2577
Built
2005
Engine
Pratt & Whitney PT6A-34AG, 750 hp, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Lutes Flying Service Inc
Registered owner
Lutes Flying Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 3, 2021 · 5,774 hours before
Departed
EKM · Elkhart, IN
Destination
EKM · Elkhart, IN
Equipment
Stall warning system, Onboard weather, Electronic flight bag or handheld device, ADS-B

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
66
Injuries
Serious
Certificates
Commercial, Flight engineer, Airline transport
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
March 19, 2021
Seat
Single
Restraint
4-point
Flight hours
27,100 total · 950 in this make and model · 18,400 as pilot in command · 50 in the last 90 days · 40 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 70 °F
Altimeter
29.72 inHg
Observed at
EKM, 9 nm away

Docket · 2

The files NTSB released with the investigation on November 16, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.2 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.