CEN09LA239

NTSB accident investigation · Air Tractor AT-301 · Corning, AR · April 7, 2009

Accident · No injuriesLimited investigationFinal report
Date
April 7, 2009, 12:06 local (17:06 UTC)
Place
Corning, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N36597Air Tractor AT-301
Defining event
Initial climb: Loss of engine power (total)
Status
Completed · report September 10, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA
FAA report
20090407003319A
Case key
73615

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 engine power due to the failure of the number one engine cylinder for undetermined reasons.

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.

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 commercial pilot was on departure from initial takeoff when the engine "popped" several times and stopped producing power. The pilot performed a forced landing in a rice field off the departure end of the runway. The pilot found the number one cylinder head cracked during a postaccident examination of the airplane. Additional examination of the airplane revealed damage to the left aileron and both horizontal stabilizers. Additional examination of the cracked cylinder head could not be accomplished and a cause of the failure was not determined.

Factual narrative

On April 7, 2009, at 1206 central daylight time, an Air Tractor AT-301 airplane, N36597, was substantially damaged during a forced landing following a loss of engine power near Corning, Arkansas. The commercial pilot was not injured. The flight was being conducted under the provisions of Title 14 Code of Federal Regulations Part 91 without a flight plan. The cross country flight was originating from Corning Municipal Airport (4M9), Corning, Arkansas. Visual meteorological conditions prevailed at the time of the accident. The pilot stated he had just purchased the airplane and the accident flight was his first in that airplane. He and a mechanic examined the airplane prior to flight and did not observe any anomalies with the airplane or engine. The pilot started the engine and allowed it to idle and warm up for fifteen minutes prior to taxiing to takeoff. He stated the preflight and engine run-up were normal. The pilot reported he was on departure from initial takeoff when the engine "popped" several times and stopped producing power. The pilot performed a forced landing in a rice field off the departure end of the runway. The pilot found the number one cylinder head cracked during a post accident examination of the airplane. Examination of the airplane revealed damage to the left aileron and both horizontal stabilizers bent downward. Examination of the cracked cylinder head was not possible and a cause of the failure was not determined.

Aircraft

Registration
N36597
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0331
Engine
P&W R1340 SERIES, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Ferry · Part 91
Operator
Wenzel Richard E
Registered owner
Wenzel Richard E
Airworthiness certificate
Special, Restricted (Special)
Departed
4M9 · Corning, AR
Flight plan
Unknown
Airport
4M9 · Corning Municipal Airport

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
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Medical
Class 2, With waivers/limitations
Seat
Single

Docket · 7

The files NTSB released with the investigation on July 22, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.