Mathis Airport
Aircraft Accident/Incident Report

Cumming, Georgia 30041
Friday, May 12, 2006 11:47 EDT

NTSB Narrative Summary Released at Completion of Accident

A witness at the airport stated that on the morning of the accident he had spoken with the pilot for about 10 minutes, and watched as the pilot and passenger conducted a preflight inspection of the airplane. After the preflight inspection, the pilot taxied to the fuel pumps, where he topped off both fuel tanks. The witness reported that the pilot had the flaps extended between "5 and 10 degrees" prior to takeoff. The pilot taxied to runway 21, did an engine run-up, and began the takeoff roll. The witness noted that the takeoff roll was much longer than he expected, and the airplane did not rotate and climb until it reached the end of the runway. He said the airplane was in a climb attitude, and the airspeed appeared to be slow. According to the witness, "the airplane just failed to climb." He watched as the airplane reached an altitude of approximately 50 feet, and appeared that it was not going to clear the hill and trees directly off the end of the runway. The airplane then "drifted to the left through a low spot in the tree cover on the southwest boundary of the airport." Shortly thereafter, the witness heard sounds of emergency vehicles. The Forsyth County Sheriff's Office responded to the crash and located the airplane inverted, resting against a house in a residential subdivision, approximately 1/4 mile west of the airport. Inspection of the airplane disclosed no evidence of any preimpact mechanical anomalies. Review of the performance data in the Cessna Owners Manual revealed that at gross weight, at the calculated density altitude of approximately 1,400 feet, the airplane would require approximately 1,539 feet to clear a 50-foot obstacle using zero degrees of flaps on a level runway. Zero degrees of flaps is recommended for a short field takeoff, and no performance charts are available for takeoff with 5 or 10 degrees. Weight and balance calculations of the airplane with both occupants and full fuel, disclosed that the airplane was approximately 20 pounds over gross weight.

NTSB Probable Cause Narrative

The pilot's failure to consider the appropriate aircraft performance data prior to takeoff, and his improper use of the wing flaps during takeoff, which resulted in reduced climb performance and an in-flight collision with a residence. A factor associated with the accident was the pilot's operation of the airplane at an over gross weight.

Event Information

Type of Event Accident
Event Date 5/12/2006
Event Day of the Week Friday
Time of Event 1147
Event Time Zone Eastern Daylight Time
Event City Cumming
Event State GEORGIA
Event Country --
Zipcode of the event site 30041
Event Date Year 2006
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 340634N
Event Location Longitude 0840923W
Event Location Airport MATHIS
Event Location Nearest Airport ID 84A
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0.4
Degrees magnetic from airport --
Airport Elevation 1170
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1150 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID KLZU
Elevation of weather observation facility 1061
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 2900
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) 16
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 310
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 16
Altimeter Setting at event time (in. Hg) 29.87
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 --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21762
NTSB Notification Source FAA ATL ROC
NTSB Notification Date May 12 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 25 2007 12:22PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Atlanta FSDO-11

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1715Q
NTSB Number ATL06FA078
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 150L
Aircraft Series Identifier --
Aircraft Serial Number 15073015
Certified Max Gross Weight 1600
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 Jan 1 2006 12:00AM
Airframe hours since last inspection 13.5
Airframe Hours 4992
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Joe Voyles
Aircraft Owner Street Address 142 Bayway Circle
Aircraft Owner City Deluth
Aircraft Owner State GA
Aircraft Owner Country USA
Aircraft Owner Zipcode 30096
Operator is an individual? No
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 84A
Departure City CUMMING
Departure State GA
Departure Country USA
Departure Time 1140
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 84A
Destination City CUMMING
Destination State GA
Destination Country USA
Specific Phase of Flight Climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 15 2007 2:16PM
User who most recently changed record KENJ
Since inspection or accident Last Inspection
Event Location Runway Number and Location 21
Runway Length 1550
Runway Width 20
Sight Seeing flight No
Air Medical Flight No
Medical Flight --