Cameron Air Park Airport
Aircraft Accident/Incident Report

Cameron Park, California 95682
Thursday, August 30, 2007 12:35 PDT

NTSB Narrative Summary Released at Completion of Accident

A television news crew was filming general airplane operations at the airport and captured the accident on video. The video begins with the airplane on its takeoff roll, accelerating almost 2/3 down the runway before getting airborne. The windsock at the approach end of the runway appeared limp, indicating little to no wind. Once airborne the airplane climbed to approximately 40 feet, the wings began to wobble, and it settled back down to the ground into the rising terrain off the end of the runway, slid on the ground, and abruptly flipped over onto its back. Immediately after liftoff the plane is observed to crab to the left about 7 degrees while remaining over the runway centerline, indicating the airplane went from a calm wind condition to suddenly being affected by a left crosswind very early in the initial climb. A video study concluded that the airplane's ground speed was 80 plus or minus 4 knots as it crossed the end of the runway, speeds consistent with the POH recommended speed for the climb. The airplane was equipped with an engine turbonormalizing system which, according to the supplemental type certificate (STC), allowed for an increase in gross weight to 4,000 pounds when operated in the normal category. The outside air temperature was 96 degrees F and the field elevation is 1,286 feet msl, which resulted in a density altitude of 4,125 feet. The airplane's weight at the time of takeoff was 4,095 pounds. The airplane was also instrumented with a JPI EDM-800 Engine Analyzer. The data revealed consistent engine operation throughout the takeoff and climb at a power level between 91 and 94 percent. The highest terrain elevation directly ahead of the airplane was 1,350 feet msl, approximately 4,860 feet from the point the airplane started its takeoff roll. The elevation difference between the point the airplane left the runway and the elevated terrain directly ahead was 80 feet. Based on the STC documentation, the calculated takeoff distance to clear a 50-foot object was 4,030 feet. An independent computer model simulating the performance of the airplane at a weight of 4,100 pounds and 4,100 feet msl density altitude resulted in the airplane climbing at 911 feet per minute and clearing the terrain directly ahead of it by 148 feet. The pilot reported that shortly after takeoff he felt a gust of wind from the left. The video depicts no wind at the midfield windsock and a left crosswind at the departure end, with trees in the background waving in what appears to be a moderate breeze. No determination could be made regarding whether the crosswind that was encountered had a tailwind or headwind component. Based on all the evidence it is likely that the airplane encountered a sudden wind from the left in the takeoff initial climb that degraded the airplane's climb performance and led to a stall mush condition.

NTSB Probable Cause Narrative

The airplane's sudden encounter with a wind shift during the initial takeoff climb that resulted in degraded climb performance and a stall mush condition. Contributing to the accident was the airplane's over gross weight condition, high density altitude, the pilot's inability to compensate for the sudden wind shift, and rising terrain in the departure path.

Event Information

Type of Event Accident
Event Date 8/30/2007
Event Day of the Week Thursday
Time of Event 1235
Event Time Zone Pacific Daylight Time
Event City Cameron Park
Event Country --
Zipcode of the event site 95682
Event Date Year 2007
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 384126N
Event Location Longitude 1205935W
Event Location Airport Cameron Air park
Event Location Nearest Airport ID KO61
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 1293
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1245 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 225
Weather Observation Facility ID KMHR
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) 17
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
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) 38
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 180
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) 29.89
Density Altitude (feet) --
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 2
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 24366
NTSB Notification Source FAA
NTSB Notification Date Aug 30 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 26 2008 6:40PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Sacramento, CA FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1098F
NTSB Number LAX07FA258
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Raytheon Aircraft Company
Aircraft Model A36
Aircraft Series Identifier --
Aircraft Serial Number 3059
Certified Max Gross Weight 4000
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 1 2006 12:00AM
Airframe hours since last inspection 77
Airframe Hours 1108
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Aerometals
Aircraft Owner Street Address 2202 W Charleston Blvd Ste 7
Aircraft Owner City Las Vegas
Aircraft Owner State NV
Aircraft Owner Country USA
Aircraft Owner Zipcode 89102
Operator is an individual? No
Operator Name Ben R. Martin
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address On File
Operator City Folsom
Operator State CA
Operator Country USA
Operator Zip code 95630
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 Yes
Departure Airport Code KO61
Departure City Cameron Park
Departure State CA
Departure Country USA
Departure Time 1235
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code --
Destination City Ensenada
Destination State --
Destination Country MX
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 19 2008 4:21PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 31
Runway Length 4051
Runway Width 50
Sight Seeing flight No
Air Medical Flight No
Medical Flight --