Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Chula Vista, California 91914
Sunday, December 5, 1999 16:00 PST
NTSB Narrative Summary Released at Completion of Accident
The airplane came to rest in a lake after witnesses heard a loud noise. They saw the airplane in a tight spiral and pieces of it were floating in trail. The engine sound changed from a loud to a softer tone as the airplane rotated. Earlier in the afternoon, the pilot had visited a retired FAA inspector in Ramona, California, where he had appeared to be in good health and spirits. The inspector looked at the airplane prior to departure and did not notice anything unusual. The engine sounded good and was running strong when it taxied away from his hangar. Both wings and the fuselage/tail assembly were found floating. The left wing and canopy were lightly damaged. The left wing fractured and separated near the fuselage in a downward direction. The rest of the airplane was highly damaged and fragmented. Investigators established flight control continuity. They established engine valve train and accessory gear continuity. The oil screen was clean and the spark plug color indicated normal operation. They discovered no discrepancies that would have precluded normal operation of the airframe or engine. Toxicological testing returned a positive result for amitriptyline and nortriptyline. Amitriptyline is one of the most sedating of the antidepressants, and is given almost exclusively in the evenings because of these effects. The levels found in the pilot's blood suggested regular use of a low dosage of the medication as he and his doctor had previously described in the application for his airman's medical certificate. It is unclear what effect, if any, such low levels would have on the pilot's performance. The nature of the accident does not suggest that the medication played a significant role. However, it is possible that the medication and/or the condition for which it was being taken resulted in less than optimum response to an evolving emergency condition.
NTSB Probable Cause Narrative
The pilot exceeded the design stress limits of the airplane resulting in wing overload and separation.
Event Information
| Type of Event | Accident |
| Event Date | 12/5/1999 |
| Event Day of the Week | Sunday |
| Time of Event | 1600 |
| Event Time Zone | Pacific Standard Time |
| Event City | CHULA VISTA |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 91914 |
| Event Date Year | 1999 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1556 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 190 |
| Weather Observation Facility ID | SDM |
| Elevation of weather observation facility | 526 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | PST |
| 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) | 61 |
| Dew Point at event time (in degress fahrenheit) | 28 |
| Wind Direction (degrees magnetic) | 240 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 10436 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Dec 5 1999 12:00AM |
| NTSB Notification Time | 1640 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Aug 29 2001 10:56AM |
| User who most recently changed record | MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N192DC |
| NTSB Number | LAX00LA049 |
| 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 | Corbin/King |
| Aircraft Model | OSPREY 2 |
| Aircraft Series Identifier | OSPREY 2 |
| Aircraft Serial Number | 192 |
| Certified Max Gross Weight | 1560 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 8 1999 12:00AM |
| Airframe hours since last inspection | 33 |
| Airframe Hours | 108 |
| ELT Installed | Unknown |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | LEONARD AINSWORTH |
| Aircraft Owner Street Address | |
| Aircraft Owner City | SAN MARCOS |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 92069 |
| 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 | No |
| Departure Airport Code | SDM |
| Departure City | SAN DIEGO |
| Departure State | CA |
| Departure Country | |
| Departure Time | 1537 |
| Departure Time Zone | PST |
| 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 | Aug 8 2001 4:00AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |