Aircraft Accident/Incident Report

Tracy, California 95304
Monday, May 15, 2006 6:12 PDT

NTSB Narrative Summary Released at Completion of Accident

The engine lost partial power during takeoff and the airplane nosed over during a forced landing in a field. The pilot said that during the takeoff-initial climb, the engine experienced a partial loss of power and the airplane would not climb. The pilot made an attempt to jettison the pesticide load; however, the airplane impacted the ground before he could fully manipulate the dump controls and it came to rest inverted. A Federal Aviation Administration airworthiness inspector examined the engine, propeller, and propeller governor following the accident and no mechanical anomalies were noted. Due to damage sustained in the accident, control continuity between the cockpit control and propeller governor could not be confirmed.

NTSB Probable Cause Narrative

loss of power for undetermined reasons.

Event Information

Type of Event Accident
Event Date 5/15/2006
Event Day of the Week Monday
Time of Event 612
Event Time Zone Pacific Daylight Time
Event City Tracy
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95304
Event Date Year 2006
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 370000N
Event Location Longitude 1210000W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 555 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 30
Weather Observation Facility ID KSCK
Elevation of weather observation facility 33
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 110
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.8
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 21284
NTSB Notification Source FAA
NTSB Notification Date May 15 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 25 2007 2:54PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-OAK-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8981H
NTSB Number LAX06LA169
Missing Aircraft Indicator --
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 Grumman
Aircraft Model G-164B
Aircraft Series Identifier --
Aircraft Serial Number 4B
Certified Max Gross Weight 5200
Aircraft Category Airplane
Aircraft Registration Class --
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 Apr 1 2006 12:00AM
Airframe hours since last inspection 19
Airframe Hours 9152
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name TRINKLE AGRICULTURAL FLYING, INC.
Aircraft Owner Street Address 25001 Kasson Road
Aircraft Owner City Tracy
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 95304
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code MBNG
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code PVT
Departure City Tracy
Departure State CA
Departure Country USA
Departure Time 1610
Departure Time Zone PDT
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 Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 2 2007 4:51PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --