Compton/Woodley Airport
Aircraft Accident/Incident Report

Compton, California 90220
Friday, January 23, 2004 9:53 PST

NTSB Narrative Summary Released at Completion of Accident

After encountering downwash induced wake vortices from a helicopter, the airplane rolled over and impacted terrain while on short final approach. The pilot of the airplane was performing practice touch-and-go takeoffs and landings at the airport and made a radio transmission stating his intentions. A police helicopter pilot was on a 2-mile straight in approach for the same runway, and made a radio transmission stating his intentions. While on final approach for the runway, with the airplane pilot beginning a flare about 8 feet above ground level, the police helicopter's pilot was attempting a practice autorotation and descended in front of the airplane. At the last moment, the airplane's pilot saw the helicopter and made an abrupt turn to the right in an attempt to execute a go-around. The airplane rolled over inverted and impacted terrain. The helicopter pilot stated he never saw the airplane or heard the pilot's radio transmissions. Federal Aviation Regulations state that "when two or more aircraft are approaching an airport for the purpose of landing, the aircraft at the lower altitude has the right of way, but it shall not take advantage of this rule to cut in front of another which is on final approach to land, or to overtake that aircraft." (14 CFR 91.113)

NTSB Probable Cause Narrative

both pilots' failure to see and avoid one another that resulted in the airplane's encounter with downwash induced wake vortices from the helicopter, and the airplane pilot's subsequent loss of control.

Event Information

Type of Event Accident
Event Date 1/23/2004
Event Day of the Week Friday
Time of Event 953
Event Time Zone Pacific Standard Time
Event City Compton
Event State CALIFORNIA
Event Country --
Zipcode of the event site 90220
Event Date Year 2004
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 335324N
Event Location Longitude 1181462W
Event Location Airport Compton/Woodley Airport
Event Location Nearest Airport ID CPM
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 97
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 956 Pacific Standard Time
Direction of event from weather observation facility (degrees) 135
Weather Observation Facility ID LGB
Elevation of weather observation facility 60
Distance of event from weather observation facility (units?) 6
Time Zone of the weather observation PST
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) 16
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.15
Density Altitude (feet) -68
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 17980
NTSB Notification Source FAA
NTSB Notification Date Jan 23 2004 12:00AM
NTSB Notification Time 1015
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 7 2005 10:33AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-LAX-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N64EC
NTSB Number LAX04LA106
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cox Thorpe
Aircraft Model T-18
Aircraft Series Identifier --
Aircraft Serial Number 1119
Certified Max Gross Weight --
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Roy Medan
Aircraft Owner Street Address On File
Aircraft Owner City Carson
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 90746
Operator is an individual? Yes
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 Yes
Departure Airport Code CPM
Departure City Compton
Departure State CA
Departure Country USA
Departure Time 915
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 Landing - flare/touchdown
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Apr 25 2005 4:57PM
User who most recently changed record COOS
Since inspection or accident --
Event Location Runway Number and Location 25R
Runway Length 3322
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --