- Date
- July 2, 2013, 15:30 local (20:30 UTC)
- Place
- Ipswich, SD
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N2072DAir Tractor AT-402B
- Defining event
- Takeoff: Aerodynamic stall/spin
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 13, 2014
- Report
- Approved by Office Director
- NTSB office
- Central Region
- Parties
- FAA FSDO
- FAA report
- 20130702013359A
- Case key
- 87382
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 pilot’s failure to obtain adequate airspeed during the takeoff roll, which resulted in an aerodynamic stall.
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
At the beginning of an aerial application run, the pilot rotated the airplane near the end of the runway; the airplane lifted up from the ground, yawed, and then shuddered. The airplane descended, the left wing contacted the ground, and the airplane slid to a stop. The circumstances of the accident are consistent with an aerodynamic stall during takeoff because the pilot failed to obtain adequate speed to climb the airplane.
Factual narrative
On July 2, 2013, about 1530 central daylight time, an Air Tractor AT-402B, N2072D, impacted terrain after takeoff from a private strip near Ipswich, South Dakota. The commercial pilot was not injured. The airplane was substantially damaged. The airplane was registered to and operated by Tri County Ag Service Inc., under the provisions of 14 Code of Federal Regulations Part 137 as an aerial application flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The local flight was originating at the time of the accident. In a telephone interview with the pilot, he reported that the airplane was loaded with 380 gallons of applicant and 170 gallons of fuel prior to departure. He rotated the airplane near the end of the runway and the airplane lifted off. The airplane then twisted or yawed and he felt the airplane shudder before the left wing dropped and the airplane descended. The left wing contacted the ground and the airplane slid to a stop. Examination of the airplane revealed substantial damage to the left wing and fuselage.
Aircraft
- Registration
- N2072D
- Reported as
- Air Tractor AT-402B
- Category
- Airplane
- Serial number
- 402B-1268
- Engine
- P&W Canada PT6A-34AG, turbo prop
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Tri County Ag Service Inc, doing business as Tri-County Ag Service Inc
- Registered owner
- Tri County Ag Service Inc
- Airworthiness certificate
- Special, Restricted (Special)
- Departed
- 2SD9 · Ipswich, SD
- Destination
- 2SD9 · Ipswich, SD
- Airport
- 2SD9 · Tc Field, runway 36, 2,500 × 28 ft, asphalt
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
- 54
- Injuries
- None
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, With waivers/limitations
- Last flight review
- November 1, 2012
- Seat
- Single
- Restraint
- 4-point
- Flight hours
- 16,353 total · 828 in this make and model · 206 in the last 90 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 8 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F, dew point 46 °F
- Altimeter
- 30.13 inHg
- Observed at
- KABR, 25 nm away
Docket · 3
The files NTSB released with the investigation on January 22, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 391 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.