CEN13LA568

NTSB accident investigation · Air Tractor AT 802 · Gould, AR · August 28, 2013

Accident · No injuriesLimited investigationFinal report
Date
August 28, 2013, 07:45 local (12:45 UTC)
Place
Gould, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9119BAir Tractor AT 802
Defining event
Takeoff: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report January 30, 2014
Report
Approved by Office Director
NTSB office
Central Region
FAA report
20130828016219A
Case key
88161

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 a bearing in the fuel control unit, which resulted in fuel starvation and a total loss of engine power.

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.

Fluids: fuelAircraft › Fluids/misc hardware · Not specifiedAir Tractor AT-802: 1 caseAll aircraft: 1,695 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

A total loss of airplane engine power occurred shortly after the pilot took off for the aerial application flight. The pilot made a forced landing in a corn field, which resulted in substantial damage to the left wing. A postaccident examination of the engine revealed a bearing inside the fuel control unit had failed, which resulted in the loss of engine power due to fuel starvation. The fuel control unit was overhauled 928 hours before the accident. The manufacturer's recommended time between overhauls for the fuel control unit is 3,500 hours.

Factual narrative

On August 28, 2013, at 0745 central daylight time, an Air Tractor AT-802 airplane, N9119B, collided with the terrain following a loss of engine power on takeoff from a private airstrip in Gould, Arkansas. The commercial pilot was not injured. The airplane received substantial damage to the airframe. The airplane was registered to and operated by Triple J Flying Service as a 14 Code of Federal Regulations Part 137 aerial application flight. Visual meteorological conditions prevailed for the flight, which was not operating on a flight plan. The local flight originated from a private airstrip in Gould, Arkansas, just prior to the accident. The pilot stated that he departed his private airstrip and climbed to an altitude of 100 feet above ground level at which time the engine lost power. He attempted to restart the engine, but was not able to regain any power. The pilot landed the airplane in a corn field. The airplane sustained substantial damage to the left wing. A postaccident examination of the engine revealed a bearing inside the fuel control unit, part number 8063-032-01, had failed resulting in fuel starvation to the engine. The fuel control unit was installed on the engine on January 11, 2011 and was last overhauled 928 hours prior to the accident. According to the overhaul facility, the manufacturers recommended time between overhaul for the fuel control unit is 3,500 hours.

Aircraft

Registration
N9119B
Reported as
Air Tractor AT 802
Category
Airplane
Serial number
802-0100
Built
2000
Airframe hours
4,594
Engine
Pratt & Whitney PT6-65AG, 1,295 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Triple J Flying Service
Registered owner
Triple J Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · August 20, 2013
Departed
Gould, AR
Destination
Gould, 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
October 2, 2012
Seat
Center
Flight hours
9,294.2 total · 600 in this make and model · 600 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 64 °F
Altimeter
30.07 inHg
Observed at
PBF, 25 nm away

Docket · 3

The files NTSB released with the investigation on December 16, 2013, 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.