Individually Owned: 150,657
Corporate Owned: 137,281
Buchanan Field Airport
Aircraft Accident/Incident Report
Concord, California 94520
Tuesady, April 17, 2007 15:50 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that the tower informed him the winds were from 250 degrees at 25 mph with gusts up to 30 mph. He aborted his first approach to runway 19R. On the second approach, he had "good rudder and aileron control at the 80 mph approach speed." At approximately 40 feet above ground level (agl), he encountered "a strong wind shear" and the airplane dropped to an altitude of 10 feet agl. The pilot added power and landed the airplane on the runway. At that time, a "very strong gust of wind" lifted the right wing and pushed the airplane towards the left side of the runway. The pilot attempted to regain control, however, he was not successful, and the airplane continued to the left "into a ground loop off of the runway." The nose landing gear collapsed, and the airplane came to rest nose down. The recorded winds at the airport near the time of the accident were from 260 degrees at 24 knots with gusts to 30 knots.
NTSB Probable Cause Narrative
The pilot's failure to maintain directional control during landing, resulting in a ground loop/swerve and collapse of the nose landing gear. A contributing factor was the gusty wind condition.
Event Information
| Type of Event | Accident |
| Event Date | 4/17/2007 |
| Event Day of the Week | Tuesday |
| Time of Event | 1550 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Concord |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94520 |
| Event Date Year | 2007 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 375923N |
| Event Location Longitude | 1220325W |
| Event Location Airport | Buchanan Field |
| Event Location Nearest Airport ID | CCR |
| 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 | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1553 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | CCR |
| Elevation of weather observation facility | 26 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 4800 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 16 |
| Dew Point at event time (in degress fahrenheit) | 2 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 24 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 30 |
| Altimeter Setting at event time (in. Hg) | 30.17 |
| 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 Docket Number (internal use) | 21666 |
| NTSB Notification Source | FAA ROC |
| NTSB Notification Date | -- |
| 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 | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N3115U |
| NTSB Number | SEA07CA104 |
| 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 | -- |
| Aircraft Manufacturer's Full Name | Maule |
| Aircraft Model | MT-7-235 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 18008C |
| Certified Max Gross Weight | -- |
| 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 | -- |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | -- |
| ELT Activated | -- |
| ELT Aided Location of Event Site | -- |
| ELT Type | -- |
| Aircraft Owner Name | Denova Homes Inc. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | -- |
| Aircraft Owner State | -- |
| Aircraft Owner Country | -- |
| Aircraft Owner Zipcode | -- |
| Operator is an individual? | Yes |
| Operator Name | David B. Sanson |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Pleasant Hill |
| Operator State | CA |
| Operator Country | USA |
| 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) | Business |
| Second Pilot on Board | -- |
| Departure Point Same as Event | No |
| Departure Airport Code | E16 |
| Departure City | Morgan Hill |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | -- |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | CCR |
| Destination City | Concord |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 14 2007 4:20PM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 19R |
| Runway Length | 5001 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |