- Date
- May 9, 1991, 08:49 local (15:49 UTC)
- Place
- Marysville, CA
- Injuries
- 1 fatal, 1 serious
- Phase of flight
- Maneuvering
- Aircraft
- N3633QAyres S2RT34N4012YSchweizer G164B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 14, 1993
- Report
- Approved by Office Director
- FAA reports
- 19910509014872A19910509014871A
- Case key
- 27199
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 pilots' inadequate visual lookout for other air traffic.
The pilots' inadequate visual lookout for other air traffic.
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 of the ayres (thrush) was performing an aerial application flight over a field adjacent to an airstrip from which a Schweizer (ag cat) had just departed. The Schweizer was enroute to perform an aerial application flight at another field. As the ayres pilot was beginning to reverse course to make another application run, the Schweizer, which was on initial climb, commenced a right turn, and the flight paths of the two airplanes converged. After the nearly head on collision, the two airplanes descended out of control and crashed into the underlying field.
The pilot of the ayres (thrush) was performing an aerial application flight over a field adjacent to an airstrip from which a Schweizer (ag cat) had just departed. The Schweizer was enroute to perform an aerial application flight at another field. As the ayres pilot was beginning to reverse course to make another application run, the Schweizer, which was on initial climb, commenced a right turn, and the flight paths of the two airplanes converged. After the nearly head on collision, the two airplanes descended out of control and crashed into the underlying field.
Aircraft · 2
- Registration
- N3633Q
- Reported as
- Ayres S2RT34
- Category
- Airplane
- Serial number
- 60747
- Engine
- P&W PT6A-34AG, 750 horsepower, turbo prop
- Damage
- Destroyed
- Fire
- Unknown
- Flight
- Aerial application · Part 137
- Operator
- Bowles Flying Service
- Registered owner
- Agro West Inc.
- Last inspection
- Unknown · January 2, 2000
- Departed
- NONE · Marysville, CA
- Registration
- N4012Y
- Reported as
- Schweizer G164B
- Category
- Airplane
- Serial number
- 777B
- Engine
- P&W R1340, 600 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Aerial application · Part 137
- Operator
- Onstott Dusters, Inc.
- Registered owner
- Onstott Dusters, Inc.
- Last inspection
- Unknown · January 2, 2000
- Departed
- NONE · Marysville, CA
Flight crew · 2
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot, aircraft N3633Q
- Age
- 48
- Certificate
- Commercial
- Airplane ratings
- Single-engine sea, Multi-engine sea, Single-engine land, Multi-engine land
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Toxicology
- Performed
- Flight hours
- 8,000 total
- Role
- Pilot, aircraft N4012Y
- Age
- 45
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Flight hours
- 4,460 total
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 5 statute miles
- Lowest ceiling
- None
FAA reports on this event · 2
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.