Aircraft Incident/Accident Report
Gwinnett County Airport

Lawrenceville, Georgia 30045
Saturday, October 9, 2010 14:07 EDT

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NTSB Narrative Summary Released at Completion of Accident
Witnesses reported that the pilot had removed the engine cowling prior to the accident flight and was performing maintenance on the engine. They observed the airplane depart from the runway and noted that it sounded as if it was not producing full power. The airplane then oscillated, banked left, and impacted a road with the left wing down. Examination of the engine revealed the nut on the bottom of the gascolator was not safety wired and was loose, allowing air into the fuel system. Additionally, the gascolator bowl, carburetor bowl, and float needle valve were heavily rusted and corroded. The fuel line from the wing fuel tanks to the fuel pump had been blocked off with a rubber hose, making the only fuel available to the engine, the six gallons in the header tank. The pilot's son reported that prior to the accident, the pilot performed maintenance on the airplane due to a fuel problem. The pilot's son believed the problem was resolved and the pilot last flew the airplane about a week prior to the accident in the local area. According to the maintenance logbooks, the most recent inspection was completed on the airplane 10 months prior to the accident. Examination of the pilot's logbook revealed his only flight in the accident airplane was a 30-minute flight 6 days prior to the accident.
NTSB Probable Cause Narrative
Inadequate maintenance performed on the airplane, which resulted in a loss of engine power due to fuel starvation. Contributing to the accident was the corrosion within the carburetor.
Event Information
Type of EventAccident 
Event Date10/9/2010 
Event Day of the WeekSaturday 
Time of Event1407 
Event Time ZoneEastern Daylight Time 
Event CityLawrenceville 
Event StateGEORGIA 
Event Country-- 
Zipcode of the event site30045 
Event Date Year2010 
Event Date Month10 
MidAir Collision IndicatorNo 
On Ground Collision occurred ?No 
Event Location Latitude335841N 
Event Location Longitude0835744W 
Event Location AirportGwinnett County Airport 
Event Location Nearest Airport IDLZU 
Indicates whether the acc/inc occurred off or on an airportOff Airport/Airstrip 
Distance from airport in statute miles
Degrees magnetic from airport-- 
Airport Elevation1061 
Weather Briefing Completeness-- 
Investigator's weather sourceWeather Observation Facility 
Time of the weather observation1406 Eastern Daylight Time 
Direction of event from weather observation facility (degrees)-- 
Weather Observation Facility IDLZU 
Elevation of weather observation facility1061 
Distance of event from weather observation facility (units?)
Time Zone of the weather observationEDT 
Lighting ConditionsDay 
Lowest Ceiling Height-- 
Lowest Non-Ceiling Height-- 
Sky/Lowest/Cloud ConditionsClear 
Sky Condition for Lowest CeilingNone 
Visibility Runway Visual Range (Feet)-- 
Visibility Runway Visual Value (Statute Miles)-- 
Visibility (Statute Miles) 10 
Air Temperature at event time (in degrees celsius)27 
Dew Point at event time (in degress fahrenheit)
Wind Direction (degrees magnetic)310 
Variable Wind IndicatorWind direction could be determined 
Wind Speed (knots)
Wind Velocity Indicator -- 
Wind Gust IndicatorNot Gusting 
Wind Gust (knots) -- 
Altimeter Setting at event time (in. Hg) 30.05 
Density Altitude (feet)-- 
Intensity of Precipitation-- 
METAR weather report -- 
Event Highest InjuryFatal 
On Ground, Fatal Injuries-- 
On Ground, Minor Injuries-- 
On Ground, Serious Injuries-- 
Injury Total Fatal
Injury Total Minor-- 
Injury Total None-- 
Injury Total Serious-- 
Injury Total All
Investigating AgencyNTSB 
NTSB Docket Number (internal use)28497 
NTSB Notification SourceLocal Authorities  
NTSB Notification Date-- 
NTSB Notification Time-- 
Fiche Number and/or location -used to find docket information-- 
Date of most recent change to recordJul 6 2011 10:22AM 
User who most recently changed recordandj 
Basic weather conditionsVisual Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN89331 
NTSB NumberERA11LA014 
Missing Aircraft Indicator-- 
Federal Aviation Reg. PartPart 91: General Aviation 
Type of Flight Plan filedNone 
Flight plan Was Activated?-- 
Aircraft FireNone 
Aircraft ExplosionNone 
Aircraft Manufacturer's Full NameENGINEERING & RESEARCH 
Aircraft ModelERCOUPE 415-D 
Aircraft Series Identifier-- 
Aircraft Serial Number3269 
Certified Max Gross Weight-- 
Aircraft CategoryAirplane 
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
Fixed gear or retractable gearFixed 
Aircraft, Type of Last InspectionAnnual 
Date of Last InspectionDec 12 2009 12:00AM 
Airframe hours since last inspection1829 
Airframe Hours1828 
ELT InstalledUnknown 
ELT ActivatedUnknown 
ELT Aided Location of Event SiteUnknown 
ELT Type-- 
Aircraft Owner NameBLAKE TIMOTHY Q 
Aircraft Owner Street Address4980 POPLAR SPRINGS CIR 
Aircraft Owner CityGAINESVILLE 
Aircraft Owner StateGA 
Aircraft Owner CountryUSA  
Aircraft Owner Zipcode30507-8882 
Operator is an individual?No 
Operator Same as Owner?Yes 
Operator Is Doing Business As-- 
Operator Address Same as Owner?Yes 
Operator Street Address-- 
Operator StateGA 
Operator CountryUSA  
Operator Zip code30507-8882 
Operator Code-- 
Owner has at least one certificateNone 
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 BoardNo 
Departure Point Same as EventYes 
Departure Airport CodeLZU  
Departure CityLawrenceville 
Departure StateGA 
Departure CountryUSA 
Departure Time1350 
Departure Time ZoneEDT 
Destination Same as Local Fltdest & departure same, accident can occur anywhere 
Destination Airport CodeLZU  
Destination CityLawrenceville 
Destination StateGA 
Destination CountryUSA 
Specific Phase of Flight-- 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordJun 1 2011 3:35PM 
User who most recently changed recordkenj 
Since inspection or accidentTime of Accident 
Event Location Runway Number and Location25 
Runway Length6000 
Runway Width100 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--