Palm Beach County Park Airport
Aircraft Accident/Incident Report

West Palm Beach, Florida 33462
Saturday, April 3, 2010 12:15 EDT

NTSB Narrative Summary Released at Completion of Accident

Witnesses reported that the pilot of the experimental, amateur-built airplane was working on the engine's alternator and then planned to fly from his home airport, to an airport about 30 miles away, to purchase fuel. Shortly after takeoff, witnesses heard the engine noise cease. The airplane then stalled and entered a spin, descending nose-down into a lake, about 1/8 mile east of the departure airport. A postaccident examination of the wreckage revealed that both fuel tanks were compromised during impact and had been filled with water. The quantity of fuel, if any, in the fuel tanks prior to impact could not be determined; the airplane's last fueling could not be verified. The examination of the airframe and engine did not reveal any preimpact mechanical malfunctions. Toxicology results indicated that the pilot had used marijuana and an over-the-counter antihistamine. The condition of the samples tested did not permit accurate determination of when the substances might have most recently been used or whether the pilot may have been impaired by their use.

NTSB Probable Cause Narrative

The total loss of engine power and the pilot's failure to maintain adequate airspeed while maneuvering, which resulted in an aerodynamic stall and spin. The reason for the loss of power could not be determined.

Event Information

Type of Event Accident
Event Date 4/3/2010
Event Day of the Week Saturday
Time of Event 1215
Event Time Zone Eastern Daylight Time
Event City West Palm Beach
Event State FLORIDA
Event Country --
Zipcode of the event site 33462
Event Date Year 2010
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 263535N
Event Location Longitude 0800506W
Event Location Airport Palm Beach County Park Airport
Event Location Nearest Airport ID LNA
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation 14
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1153 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 355
Weather Observation Facility ID PBI
Elevation of weather observation facility 19
Distance of event from weather observation facility (units?) 7
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Few
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) 24
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 120
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 17
Altimeter Setting at event time (in. Hg) 30.09
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 27979
NTSB Notification Source Local Law Enforcement
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Feb 15 2011 4:13PM
User who most recently changed record kenj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N84KM
NTSB Number ERA10LA205
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 CUPAIOLE
Aircraft Model RV-6A
Aircraft Series Identifier --
Aircraft Serial Number 60564
Certified Max Gross Weight 1650
Aircraft Category Airplane
Aircraft Registration Class --
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 Conditional
Date of Last Inspection Jan 1 2010 12:00AM
Airframe hours since last inspection --
Airframe Hours 594
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Micahel Cupaiole
Aircraft Owner Street Address --
Aircraft Owner City Boynton Beach
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 33436
Operator is an individual? No
Operator Name Micahel Cupaiole
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Boynton Beach
Operator State FL
Operator Country USA
Operator Zip code 33436
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 LNA
Departure City West Palm Beach
Departure State FL
Departure Country USA
Departure Time 1215
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code PHK
Destination City Pahokee
Destination State FL
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 15 2011 4:13PM
User who most recently changed record kenj
Since inspection or accident Last Inspection
Event Location Runway Number and Location 09
Runway Length 3489
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --