Aircraft Accident/Incident Report

Grimes, California 95950
Thursday, November 16, 1989 8:45 PST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT OF THE SPRAY AIRCRAFT EXECUTED AN EMERGENCY LANDING INTO A PLOWED FIELD AFTER EXPERIENCING A LOSS OF ENGINE POWER. EXAMINATION OF THE PROPELLER REVEALED A PORTION OF THE COUNTER WEIGHT BRACKET WAS MISSING. THERE WERE SEVERAL AREAS OF 'BEACH MARKS' EXTENDING FROM THE INNER RADIUS TO THE OUTER RADIUS OF THE FRACTURED AREAS.

NTSB Probable Cause Narrative

FAILURE OF THE COUNTER WEIGHT BRACKET TO THE PROPELLER ASSEMBLY.

Event Information

Type of Event Accident
Event Date 11/16/1989
Event Day of the Week Thursday
Time of Event 845
Event Time Zone Pacific Standard Time
Event City GRIMES
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95950
Event Date Year 1989
Event Date Month 11
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID MYV
Elevation of weather observation facility 62
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) 25
Air Temperature at event time (in degrees celsius) 6
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 FAA
NTSB Docket Number (internal use) 2192
NTSB Notification Source --
NTSB Notification Date Nov 16 1989 12:00AM
NTSB Notification Time 845
Fiche Number and/or location -used to find docket information 41953
Date of most recent change to record Dec 13 2000 1:12PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3633Q
NTSB Number LAX90DVG01
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-164B
Aircraft Series Identifier G-164B
Aircraft Serial Number 777B
Certified Max Gross Weight 5200
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 Annual
Date of Last Inspection Mar 1 1989 12:00AM
Airframe hours since last inspection 582
Airframe Hours 2355
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ONSTOTT DUSTERS
Aircraft Owner Street Address P.O. BOX 709
Aircraft Owner City YUBA CITY
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 95992
Operator is an individual? --
Operator Name HAROLD C. TACKER
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address RT. 4 BOX 93 SP 59A
Operator City WOODLAND
Operator State CA
Operator Country
Operator Zip code 95695
Operator Code
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 Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 800
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --