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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

May 9, 1991 · Ayres S2RT34 · N3633Q

Marysville, CA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
May 9, 1991
Injury Outcomes
2 injuries (1 fatality, 1 serious injury)
Location
Marysville, CA
Aircraft
Ayres S2RT34
Tail Number
N3633Q
Operator
Bowles Flying Service
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX91LA204

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.

NTSB Probable Cause

THE PILOTS' INADEQUATE VISUAL LOOKOUT FOR OTHER AIR TRAFFIC.

Full Narrative

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.

Flight

Event TypeAccident
Event Time08:49 PDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireUnknown
Aircraft ExplosionUnknown

Aircraft

AircraftAyres S2RT34
Tail NumberN3633Q
Aircraft CategoryAir
DamageDestroyed
OperatorBowles Flying Service
Operating RulePart 137
Engines1
Engine TypeTurboprop
Engine DetailsP&W · PT6A-34AG · Turboprop · 750 | P&W · R1340 · Reciprocating · 600
Seats1

People & Injuries

Injury Summary2 injuries (1 fatality, 1 serious injury)
Fatal1
Serious1
Minor0
Uninjured0
Total2
Crew 1Age 48 · Second Class
Crew 2Age 45 · Second Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility5 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWIT

Appendix: Source Data