CEN09LA401

NTSB accident investigation · Air Tractor AT-602 · Knobel, AR · June 30, 2009

Accident · No injuriesLimited investigationFinal report
Date
June 29, 2009, 19:00 local (Jun 30, 2009, 00:00 UTC)
Place
Knobel, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5192TAir Tractor AT-602
Defining event
Maneuvering: Powerplant sys/comp malf/fail
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20090629009809A
Case key
74177

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 failure of the P-3 tube resulting in the loss of engine power.

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.

Engine bleed air systemAircraft › Aircraft power plant · FailureAir Tractor AT-602: 1 caseAll aircraft: 7 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

According to the commercial pilot, he was maneuvering the airplane to apply fertilizer to a customer's field when the engine lost power. The commercial pilot performed a forced landing to a flooded rice field resulting in substantial damage to the left wing spar and firewall. An examination of the engine revealed that the P-3 tube had failed. No other anomalies were noted with the airplane's airframe, engine, or related systems.

Factual narrative

On June 29, 2009, approximately 1900 central daylight time, an Air Tractor Incorporated AT-602, N5192T, owned and operated by R & W Flying Incorporated, was substantially damaged during a forced landing to a field near Knobel, Arkansas. Visual meteorological conditions prevailed at the time of the accident. The aerial application flight was being conducted under the provisions of Title 14 Code of Federal Regulations Part 137 without a flight plan. The commercial pilot was not injured. The local flight departed a private airstrip just prior to the accident. According to the commercial pilot, he was maneuvering the airplane to apply "fertilizer to a customer's field" when the engine lost power. The commercial pilot performed a forced landing to a "flooded rice field." An examination of the airframe revealed that the left wing spar was bent and the firewall wrinkled. The engine was examined under the auspices of a Federal Aviation Administration airworthiness inspector. The examination revealed that the P-3 tube had failed. No other anomalies were noted with the airplane, airframe, engine or related systems.

Aircraft

Registration
N5192T
Reported as
Air Tractor AT-602
Category
Airplane
Serial number
602-0527
Airframe hours
3,600
Engine
P&W Canada PT6A-66 SER, 850 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
R & W Flying Inc
Registered owner
R & W Flying Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 26, 2009
Departed
Knobel, AR
Destination
Knobel, AR

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
34
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
April 20, 2009
Seat
Front
Flight hours
5,200 total · 2,000 in this make and model · 5,000 as pilot in command · 246 in the last 90 days · 146 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 8 knots
Lowest ceiling
None
Temperature
91 °F
Altimeter
29.92 inHg

Docket · 1

The files NTSB released with the investigation on August 18, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 532 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.

Other investigations on N5192T · 1

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