- Date
- August 10, 2008, 06:35 local (11:35 UTC)
- Place
- Turton, SD
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9078GAir Tractor AT-802A
- Defining event
- Enroute-cruise: Loss of engine power (total)
- Weather
- Visual (VMC) · Dawn
- Status
- Completed · report September 26, 2008
- Report
- Approved by Office Director
- Case key
- 68764
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
The failure of the starter generator which resulted in the subsequent loss of engine power. Contributing to the accident were the low altitude at which the airplane was operating, the tall grass, and the ditch.
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.
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 while in cruise flight at approximately 500 feet above ground level, the radios began "popping and breaking squelch." He stated that he realized the generator system failed and approximately 30 seconds later, the engine began to lose power. He advanced the throttle and turned back toward the departure airport. The pilot stated the engine then began to vibrate and rapidly lose power. The pilot dumped the chemical load and identified a road on which to land. During the landing, the left wing caught in the tall grass alongside the road, spinning the airplane around and into a ditch. Inspection revealed the starter generator failed which was followed shortly thereafter by the loss of engine power. The pilot reported the starter generator was on fire after the accident.
Factual narrative
On August 10, 2008, at 0635 central daylight time, an Air Tractor AT-802A, N9078G, collided with a ditch during an off airport forced landing in Turton, South Dakota. The pilot was not injured. The airplane received substantial damage. The aerial application flight was operated by Wilbur-Ellis Air LLC under Title 14 Code of Federal Regulations Part 137. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from Huron, South Dakota, at 0615.
The pilot reported that while in cruise flight at approximately 500 feet above ground level, the radios began "popping and breaking squelch." He stated he realized the generator system failed and approximately 30 seconds later, the engine began to lose power. He advanced the throttle and turned back toward the departure airport. The pilot stated the engine then began to vibrate and rapidly lose power. The pilot dumped the chemical load and identified a road on which to land. During the landing, the left wing caught in the tall grass alongside the road, spinning the airplane around and into a ditch.
The pilot reported the starter generator failed which was followed shortly thereafter by the loss of engine power. He reported the starter generator was on fire after the accident.
Aircraft
- Registration
- N9078G
- Reported as
- Air Tractor AT-802A
- Category
- Airplane
- Serial number
- 802A-0015
- Engine
- Pratt & Whitney Canada PT6A-65AG, turbo prop
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Wilbur-Ellis Air LLC
- Registered owner
- Krech Greg Trustee
- Airworthiness certificate
- Special, Restricted (Special)
- Departed
- HON · Huron, SD
- Destination
- Turton, SD
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
- 41
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Flight hours
- 9,078 total · 856 in this make and model · 8,990 as pilot in command · 622 in the last 90 days · 185 in the last 30 days · 0 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Dawn
- Wind
- 120° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 10,000 ft broken
- Temperature
- 70 °F, dew point 64 °F
- Altimeter
- 29.98 inHg
- Observed at
- HON