- Date
- July 15, 1993, 05:15 local (12:15 UTC)
- Place
- Buckeye, AZ
- Injuries
- 1 minor
- Damage
- Destroyed
- Phase of flight
- Maneuvering
- Aircraft
- N40203Ayres S2R-T34
- Weather
- Visual (VMC) · Dawn
- Status
- Completed · report June 30, 1994
- Report
- Approved by Office Director
- FAA report
- 19930715023729A
- Case key
- 28427
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 visually detect and avoid a power line. A factor in the accident was the twilight light condition.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot said that after takeoff from an adjacent airstrip he over flew the fields to be sprayed checking for obstacles, then descended for the first swath run. At the end of the second field, the aircraft collided with a power line that the pilot said he did not see during the over flight. The pilot reported that the aircraft then went out of control and collided with the ground. Utilizing a Safety Board computer program, the position of the sun was computed for the date, location and time of the accident. The sun was found to be 3.4 degrees below the horizon on a magnetic azimuth of 048.9 degrees. The accident occurred during the hours of civil twilight.
Factual narrative
On July 15, 1993, at 0515 Mountain standard time, an Ayers Corporation S2R-T34, N40203, collided with power lines while engaged in aerial application maneuvers near Buckeye, Arizona. The aircraft was operated by Pierce Aviation of Buckeye, Arizona, under the provisions of 14 CFR Part 137 of the Federal Aviation Regulations. Visual meteorological conditions prevailed at the time and no flight plan was filed. The aircraft was destroyed in the obstacle and ground collision sequence. The certificated commercial pilot sustained minor injuries. The flight originated from a dirt airstrip near the fields to be sprayed on the day of the mishap at about 0510 hours as a local aerial application flight.
The pilot said that after takeoff from the airstrip he over flew the fields to be sprayed checking for obstacles, then descended for the first swath run. At the end of the second field, the aircraft collided with a power line that the pilot said he did not see during the over flight. The pilot reported that the aircraft then went out of control and collided with the ground.
Utilizing a Safety Board computer program, the position of the sun was computed for the date, location and time of the accident. The sun was found to be 3.4 degrees below the horizon on a magnetic azimuth of 048.9 degrees. The accident occurred during the hours of civil twilight.
Aircraft
- Registration
- N40203
- Reported as
- Ayres S2R-T34
- Category
- Airplane
- Serial number
- T34-020
- Airframe hours
- 6,554
- Engine
- P&W PT6-34AG, 750 horsepower, turbo prop
- Damage
- Destroyed
- Flight
- Aerial application · Part 137
- Operator
- Pierce Aviation
- Registered owner
- Ag Aviation
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · April 1, 1993 · 55 hours before
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
- 44
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 10,144 total · 250 in this make and model · 10,031 as pilot in command · 156 in the last 90 days · 39 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Dawn
- Wind
- 240° at 4 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 79 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.