Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Willows, California 95988
Thursday, April 11, 2002 10:06 PDT
NTSB Narrative Summary Released at Completion of Accident
According to witnesses, the airplane was seen approaching the motor sports park from the southwest at approximately 1,200 feet agl and at a "faster than usual" rate of speed. The airplane was in a "sharp, 90-degree bank," as it began to circle the park in a level turn. After circling around to the east, the airplane returned to a wings-level attitude and began to climb. Shortly thereafter, the tail of the airplane began to "shake violently" and separate from the airplane. One witness said he heard a loud noise as "the tail came off, and all of it started falling apart." He said the tail section separated first, then the airplane pitched over, and the left wing broke off. Witnesses saw the airplane enter a downward spiral. As the airplane descended, the engine separated and the passenger was ejected. The airplane then entered an inverted flat spin and impacted the ground 1,000 feet north of park. An examination of the airplane's left wing, and stabilizers revealed structural failures consistent with overload. According to the manufacturer's Flight Strength Diagram or Vn diagram for the G35, abrupt control column deflection at a speed of 113 knots (Va, or maneuvering speed) could produce a 4.4 G structural load (Limit Load factor), while abrupt control column deflection at or above 152 knots (Vno/Vc, or maximum structural cruise speed) could produce a 6.6 G structural load (Ultimate Load limit). Examination of the recorded radar data disclosed that the airplane was traveling at 142 knots at the time of the breakup. Engineering analysis concluded that in a level turn, the bank angle required to achieve Limit Load is 76.8 degrees, and the bank angle required to achieve the Ultimate Load is 81.2 degrees. FAA toxicology testing of the pilot revealed the presence of Diphenhydramine in urine, and Norverapamil, and Verapamil in urine and liver.
NTSB Probable Cause Narrative
the pilot's entry into an abrupt maneuver at an excessive airspeed beyond Va, which resulted in exceeding the aircraft's design stress limits.
Event Information
| Type of Event | Accident |
| Event Date | 4/11/2002 |
| Event Day of the Week | Thursday |
| Time of Event | 1006 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Willows |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 95988 |
| Event Date Year | 2002 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 393208N |
| Event Location Longitude | 1221908W |
| 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 | 948 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 55 |
| Weather Observation Facility ID | CIC |
| Elevation of weather observation facility | 238 |
| Distance of event from weather observation facility (units?) | 26 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 95 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 40 |
| Air Temperature at event time (in degrees celsius) | 18 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30.15 |
| Density Altitude (feet) | 438 |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 15709 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Apr 11 2002 12:00AM |
| NTSB Notification Time | 1100 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 30 2004 12:15PM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Sacramento, California FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4487D |
| NTSB Number | LAX02FA134 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Beech |
| Aircraft Model | G35 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | D-4612 |
| Certified Max Gross Weight | 2775 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Jun 12 2001 12:00AM |
| Airframe hours since last inspection | 62 |
| Airframe Hours | 6119 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Lawrence E. Anderson |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Red Bluff |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 96080 |
| 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 | RBL |
| Departure City | Red Bluff |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 950 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | WLW |
| Destination City | Willows |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Apr 20 2004 6:21PM |
| User who most recently changed record | COOS |
| 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 | -- |