Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Antioch, California 94531
Saturday, June 3, 2006 14:35 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot shut down the engine and force-landed the airplane in a field following a loss of oil pressure while performing an aerobatic maneuver. During the landing roll, the airplane nosed-over in muddy terrain. Post accident examination showed that a portion of the number 5 cylinder piston skirt had fractured and was located within the oil valve. The oil valve works through the means of gravity operated ball valves which includes two balls and a spring. During normal flight, the top ball valve is closed and the bottom ball valve is open. During inverted flight, the opposite is true. In this location, the fractured piece could prevent the ball assembly of the oil valve from seating.
NTSB Probable Cause Narrative
The loss of oil pressure due to metal pieces from the number 5 piston skirt in the oil system, which prevented the oil valve top ball valve from seating. The muddy terrain was a factor.
Event Information
| Type of Event | Accident |
| Event Date | 6/3/2006 |
| Event Day of the Week | Saturday |
| Time of Event | 1435 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Antioch |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94531 |
| Event Date Year | 2006 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 375600N |
| Event Location Longitude | 1214700W |
| 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 | 1453 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 340 |
| Weather Observation Facility ID | LVK |
| Elevation of weather observation facility | 400 |
| Distance of event from weather observation facility (units?) | 19 |
| 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) | 32 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 8 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.97 |
| 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) | 21621 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jun 3 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 27 2007 1:15PM |
| 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 | N117PS |
| NTSB Number | LAX06LA190 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Aviat Aircraft Inc |
| Aircraft Model | Pitts S-2B |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 5346 |
| Certified Max Gross Weight | 1625 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Mar 1 2006 12:00AM |
| Airframe hours since last inspection | 49 |
| Airframe Hours | 2256.3 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Team Foumori LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | San Francisco |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 94115 |
| Operator is an individual? | No |
| Operator Name | Yuichi Takagi |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Livermore |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | 94551 |
| 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 | LVK |
| Departure City | Livermore |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1400 |
| 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 | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 2 2007 11:01PM |
| User who most recently changed record | STAM |
| 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 | -- |