CEN09CA514

NTSB accident investigation · Air Tractor AT-301 · DeWitt, IL · August 10, 2009

Accident · Minor injuriesData collectionFinal report
Date
August 10, 2009, 13:40 local (18:40 UTC)
Place
DeWitt, IL
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5018SAir Tractor AT-301
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report October 19, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20090810020199A
Case key
74492

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 pilot's failure to maintain clearance from the tree during the aerial application maneuver.

Findings · 2

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.

Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on equipmentAir Tractor AT-301: 6 casesAll aircraft: 933 cases

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 he made his first aerial application run without any problems. He said that during his second run he lost lift during a turn. He went to full power and tried to clear some trees. The left wing caught the top of a tree and the airplane sustained substantial damage on subsequent impact with terrain. The pilot reported no mechanical malfunctions with the airplane.

Factual narrative

The pilot reported that he made his first aerial application run without any problems. He said that during his second run he lost lift during a turn. He went to full power and tried to clear some trees. The left wing caught the top of a tree and the airplane sustained substantial damage on subsequent impact with terrain. The pilot reported no mechanical malfunctions with the airplane.

Aircraft

Registration
N5018S
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0107
Airframe hours
7,445
Engine
P&W R1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Mikes Air Service Inc
Registered owner
Mikes Air Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 19, 2009
Departed
PVT · Cisco, IL
Destination
PVT · Cisco, IL

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
67
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
April 5, 2008
Seat
Center
Flight hours
7,035 total · 249 in this make and model · 6,900 as pilot in command · 94 in the last 90 days · 86 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
81 °F, dew point 68 °F
Altimeter
30.05 inHg
Observed at
BMI

Docket · 1

The files NTSB released with the investigation on August 20, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 584 KB 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.