Chino Airport
Aircraft Accident/Incident Report

Chino, California 91710
Saturday, September 11, 1999 17:30 PDT

NTSB Narrative Summary Released at Completion of Accident

While in the traffic pattern after takeoff, the engine lost power, the pilot lost control, and the airplane crashed. The airport control tower operator stated that the pilot radioed that he was unable to climb and wanted to return for landing. After clearing him to land, he observed the airplane entering a tight nose down spiral. The airplane remained in the spiral until it disappeared from his view. The engine had been experiencing overheating and loss of power problems. The pilot had replaced the fixed jet in his single jet carburetor with an adjustable jet just before the accident. The FAA inspector who examined the wreckage noted that the jet was missing from the carburetor. The pilot's student pilot certificate did not show a solo endorsement for this make and model airplane.

NTSB Probable Cause Narrative

The in-flight separation and loss of the carburetor fuel jet resulting from the pilot's improper installation of the component. Also causal was the pilot's failure to maintain an adequate airspeed margin following the loss of power, which resulted in an inadvertent stall and spiral.

Event Information

Type of Event Accident
Event Date 9/11/1999
Event Day of the Week Saturday
Time of Event 1730
Event Time Zone Pacific Daylight Time
Event City CHINO
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91710
Event Date Year 1999
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport CHINO
Event Location Nearest Airport ID CNO
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 650
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1742 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID CNO
Elevation of weather observation facility 650
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation PDT
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) 10
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 290
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 2322
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1874
NTSB Notification Source --
NTSB Notification Date Sep 11 1999 12:00AM
NTSB Notification Time 1737
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record May 19 2001 4:45AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N925SG
NTSB Number LAX99LA304
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Glover
Aircraft Model TEENIE TWO
Aircraft Series Identifier TEENIE TWO
Aircraft Serial Number 15-2733
Certified Max Gross Weight 585
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Sep 4 1999 12:00AM
Airframe hours since last inspection 10
Airframe Hours 44
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name STEPHEN PRESTON GLOVER
Aircraft Owner Street Address 44 VIA PAMPLOMA
Aircraft Owner City RANCHO SANTA MA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 92688
Operator is an individual? --
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
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code CNO
Departure City
Departure State
Departure Country
Departure Time 1720
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 Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 19 2001 4:08AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 26R
Runway Length 4856
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --