Gwinnett County Airport
Aircraft Accident/Incident Report

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

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 Event Accident
Event Date 10/9/2010
Event Day of the Week Saturday
Time of Event 1407
Event Time Zone Eastern Daylight Time
Event City Lawrenceville
Event State GEORGIA
Event Country --
Zipcode of the event site 30045
Event Date Year 2010
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 335841N
Event Location Longitude 0835744W
Event Location Airport Gwinnett County Airport
Event Location Nearest Airport ID LZU
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 1061
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1406 Eastern Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID LZU
Elevation of weather observation facility 1061
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
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) 27
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.05
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) 28497
NTSB Notification Source Local Authorities
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 6 2011 10:22AM
User who most recently changed record andj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N89331
NTSB Number ERA11LA014
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 None
Aircraft Manufacturer's Full Name ENGINEERING & RESEARCH
Aircraft Model ERCOUPE 415-D
Aircraft Series Identifier --
Aircraft Serial Number 3269
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 12 2009 12:00AM
Airframe hours since last inspection 1829
Airframe Hours 1828
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BLAKE TIMOTHY Q
Aircraft Owner Street Address 4980 POPLAR SPRINGS CIR
Aircraft Owner City GAINESVILLE
Aircraft Owner State GA
Aircraft Owner Country USA
Aircraft Owner Zipcode 30507-8882
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 State GA
Operator Country USA
Operator Zip code 30507-8882
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 LZU
Departure City Lawrenceville
Departure State GA
Departure Country USA
Departure Time 1350
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code LZU
Destination City Lawrenceville
Destination State GA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 1 2011 3:35PM
User who most recently changed record kenj
Since inspection or accident Time of Accident
Event Location Runway Number and Location 25
Runway Length 6000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --