WPR14LA371

NTSB accident investigation · Ayres S2R T34 · Buckeye, AZ · September 9, 2014

Accident · No injuriesLimited investigationFinal report
Date
September 9, 2014, 10:00 local (17:00 UTC)
Place
Buckeye, AZ
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N3097FAyres S2R T34
Defining event
Takeoff: Fuel contamination
Weather
Visual (VMC) · Day
Status
Completed · report November 6, 2019
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA, Pratt Whitney Canada
FAA report
20140909015599A
Case key
90052

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

A partial loss of engine power due to water contamination of the fuel.

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.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid conditionAll 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

The operator reported that the commercial pilot had conducted agricultural flights in the airplane for about 2 to 3 hours earlier on the morning of the accident without problems. During the initial climb for the accident flight, about 30 ft above ground level, the engine lost partial power. Subsequently, the pilot conducted an emergency landing straight ahead, and the airplane descended and impacted a field, during which the wings and fuselage were substantially damaged. Postaccident examination of the airplane revealed no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation. Fuel samples were taken from the fuel tanks and the operator's fuel supply tank. Testing of the samples revealed that the fuel from both the airplane's fuel tanks and the operator's supply tank were essentially water. It is likely that the loss of engine power was due to water contamination of the fuel.

Factual narrative

On September 9, 2014, about 1000 mountain standard time, an Ayres S2R-T34 airplane, N3097F, was substantially damaged during an off-airport emergency landing, following a loss of engine power during the takeoff initial climb from a private agricultural airstrip, about 30 miles west of Buckeye, Arizona. The commercial pilot was not injured. The airplane was registered to and operated by Farm AG Enterprises, as a Title 14 Code of Federal Regulations Part 137 aerial application flight. Visual meteorological conditions prevailed at the time of the accident and no flight plan was filed for the local flight that was originating at the time. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), a company representative reported that the pilot had flown the airplane for about 2-3 hours that morning, and no problems with the airplane had been reported. He said the pilot told him that during the accident takeoff, all systems were normal as the airplane lifted off the ground. Upon reaching about 30 ft above the ground, the engine's rpm dropped as though someone had pulled the power lever to idle. The pilot flew the airplane straight ahead, and it descended into a field. During the off-airport landing, the airplane sustained structural damage to the wings and fuselage. During a post-accident examination of the airplane by a Federal Aviation Administration (FAA) air safety inspector no mechanical anomalies were found. Fuel samples were taken from the airplane and the operator's fuel supply tank and sent to an independent laboratory for testing. According to the laboratory director, the fuel samples taken from both the airplane's fuel system and the operator's supply tank were essentially water, and there was insufficient fuel in the samples to test. The operator/pilot did not submit the NTSB Pilot/Operator Aircraft Accident/Incident Form (NTSB 6120.1) to the NTSB.

Aircraft

Registration
N3097F
Reported as
Ayres S2R T34 (T34)
Category
Airplane
Serial number
T34-114DC
Built
1989
Engine
P&W Canada PT6A-60A, 1,127 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Farm Ag Enterprises LLC
Registered owner
Farm Ag Enterprises LLC
Airworthiness certificate
Special, Restricted (Special)
Departed
Buckeye, AZ
Destination
Buckeye, AZ
Equipment
Unknown

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
68
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Single
Flight hours
300 total · 300 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 7 knots
Visibility
10 statute miles
Temperature
84 °F, dew point 68 °F
Altimeter
28.89 inHg
Observed at
KGBN, 24 nm away

Docket · 5

The files NTSB released with the investigation on July 24, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 309 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.