Aircraft Accident/Incident Report

Laton, California 93242
Thursday, August 11, 1994 9:54 PDT

NTSB Narrative Summary Released at Completion of Accident

DURING A DAY AERIAL APPLICATION FLIGHT, THE NO.7 ENGINE CYLINDER FAILED. THE PILOT MADE AN EMERGENCY LANDING IN A COTTON FIELD AND THE AIRPLANE NOSED OVER. THE ENGINE HAD 750 HOURS SINCE OVERHAUL, AND 100 HOURS SINCE THE LAST INSPECTION. THE REASON FOR THE FAILURE WAS NOT REPORTED.

NTSB Probable Cause Narrative

failure of the No.7 cylinder for an unspecified reason.

Event Information

Type of Event Accident
Event Date 8/11/1994
Event Day of the Week Thursday
Time of Event 954
Event Time Zone Pacific Daylight Time
Event City LATON
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93242
Event Date Year 1994
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) -7
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1431
NTSB Notification Source --
NTSB Notification Date Aug 11 1994 12:00AM
NTSB Notification Time 1650
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 12:01PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N699Y
NTSB Number LAX94LA313
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name SCHWEIZER
Aircraft Model G-164-A
Aircraft Series Identifier G-164-A
Aircraft Serial Number 250
Certified Max Gross Weight 3000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection May 16 1994 12:00AM
Airframe hours since last inspection 150
Airframe Hours 13300
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MARK R. TRINKLE
Aircraft Owner Street Address 2394 AVENUE 376
Aircraft Owner City KINGSBURG
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 93631
Operator is an individual? --
Operator Name MARK K. TRINKLE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 2394 AVENUE 376
Operator City KINGSBURG
Operator State CA
Operator Country
Operator Zip code 93631
Operator Code TOCG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code
Departure City KINGSBURG
Departure State CA
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State CA
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --