Newman Strip Airport
Aircraft Accident/Incident Report

Firebaugh, California 93622
Friday, July 12, 2002 20:30 PDT

NTSB Narrative Summary Released at Completion of Accident

The airplane sustained a separated left main landing gear during the takeoff ground roll from a private farm airstrip. After the landing gear separated from the airplane, the airplane veered off of the runway and came to rest in a ditch. An FAA airworthiness inspector examined the airplane. He reported that the ear that secures the left main gear strut to the fuselage structure had fractured and separated, allowing the left gear strut to separate from the fuselage. The inspector examined the 30-foot-wide airstrip in the area used by the pilot for the takeoff ground roll. He located a chuck hole in the asphalt pavement that was 15 feet long by 3 feet wide and that had a maximum depth of 3 inches. At the northern end of the chuck hole (closest to the airplane point of rest), a 2.5-inch-deep lip was noted in the hole wall. Marks and transfers consistent with the landing gear and the fuselage contact to the pavement were noted just beyond this chuck hole.

NTSB Probable Cause Narrative

The overload fracture and separation of the left main gear strut assembly due the left landing gear's encounter with a chuck hole in the private airstrip's asphalt pavement. A factor in the accident was the inadequate maintenance of the airstrip's surface.

Event Information

Type of Event Accident
Event Date 7/12/2002
Event Day of the Week Friday
Time of Event 2030
Event Time Zone Pacific Daylight Time
Event City Firebaugh
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93622
Event Date Year 2002
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 365100N
Event Location Longitude 1202700W
Event Location Airport Newman Strip
Event Location Nearest Airport ID PVT
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 200
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2056 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 110
Weather Observation Facility ID KFAT
Elevation of weather observation facility 336
Distance of event from weather observation facility (units?) 37
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 20000
Sky/Lowest/Cloud Conditions Few
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) 34
Dew Point at event time (in degress fahrenheit) 15
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 14
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29.79
Density Altitude (feet) 2622
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) 14957
NTSB Notification Source FAA
NTSB Notification Date Jul 15 2002 12:00AM
NTSB Notification Time 1228
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 2 2004 8:06AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-FSDO-Fresno, CA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4020Y
NTSB Number LAX02LA226
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Ayres
Aircraft Model S2R-T34
Aircraft Series Identifier --
Aircraft Serial Number T34-022
Certified Max Gross Weight 6000
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 100 Hour
Date of Last Inspection Apr 1 2002 12:00AM
Airframe hours since last inspection 157
Airframe Hours 1542
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Douglas Thiel
Aircraft Owner Street Address --
Aircraft Owner City Chowchilla
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 93610
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 T9DG
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 Firebaugh
Departure State CA
Departure Country USA
Departure Time 2030
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 Standing - engine(s) operating
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Nov 21 2003 4:54PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location NW
Runway Length 2500
Runway Width 30
Sight Seeing flight No
Air Medical Flight No
Medical Flight --