Individually Owned: 150,657
Corporate Owned: 137,281
Chino Airport
Aircraft Accident/Incident Report
Chino, California 92880
Monday, April 11, 2005 13:45 PDT
NTSB Narrative Summary Released at Completion of Accident
The airplane nosed over during a forced landing following a partial loss of engine power in the takeoff initial climb. Just prior to the accident flight, the pilot adjusted the mixture control at the carburetor because previous test flights indicated that the mixture was running too rich. He contacted the carburetor manufacturer and was advised to adjust the setting no greater than one turn. The pilot adjusted the setting one complete turn. Following an operational ground test at 2,700 rpm (full power is 3,600 rpm), he departed and climbed the airplane to 300 feet. The engine did not develop full power and he attempted to correct the problem by leaning the mixture. The condition worsened so he landed the airplane in a field. The airplane was going through its Phase I flight test and the airframe and engine had accumulated approximately 6 hours. The pilot did not report any mechanical failures with the airplane or engine.
NTSB Probable Cause Narrative
a loss of engine power due to the pilot/builder's excessive adjustment (lean) of the mixture setting at the carburetor. The pilot/builder's failure to perform a more comprehensive ground test prior to flight was a factor.
Event Information
| Type of Event | Accident |
| Event Date | 4/11/2005 |
| Event Day of the Week | Monday |
| Time of Event | 1345 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Chino |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 92880 |
| Event Date Year | 2005 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 335829N |
| Event Location Longitude | 1173811W |
| 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 | 652 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1353 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 270 |
| Weather Observation Facility ID | CNO |
| Elevation of weather observation facility | 652 |
| Distance of event from weather observation facility (units?) | 1 |
| 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) | 26 |
| Dew Point at event time (in degress fahrenheit) | 4 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 14 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.98 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| 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) | 19230 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Apr 11 2005 12:00AM |
| NTSB Notification Time | 1400 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Feb 28 2006 12:35PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-RAL-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N234HC |
| NTSB Number | LAX05LA133 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Clark |
| Aircraft Model | Aerosport Scamp |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 001 |
| Certified Max Gross Weight | 950 |
| 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 | Conditional |
| Date of Last Inspection | Mar 5 2005 12:00AM |
| Airframe hours since last inspection | 6 |
| Airframe Hours | 6 |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Harold Clark |
| Aircraft Owner Street Address | On File |
| Aircraft Owner City | Brea |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 92821 |
| 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 | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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 | No |
| Departure Airport Code | CNO |
| Departure City | Chino |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1342 |
| 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 | Takeoff - initial climb |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Dec 1 2005 6:35PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 26L |
| Runway Length | 7000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |