Twin Lakes Airport
Aircraft Accident/Incident Report

Mocksville, North Carolina 27006
Saturday, August 28, 2010 12:00 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that the airplane was on the downwind leg of the traffic pattern, when it experienced a complete loss of engine power. He was able to glide the airplane onto the runway; however, he subsequently realized that he would not be able to stop before the end of the runway, and elected to turn right into bushes, rather than encounter the down-sloping terrain located beyond the runway. The airplane contacted the bushes, and flipped over, prior to coming to rest, which resulted in substantial damage to the right wing, fuselage, and empennage. A postaccident examination of the airplane and engine did not reveal any mechanical malfunctions which would have resulted in a loss of engine power. The pilot stated that he believed the loss of engine power was due to carburetor icing, and that he had applied carburetor heat, just prior to the loss of engine power. Review of a carburetor icing envelope chart revealed that the temperature and dew point reported at an airport located about 11 miles southeast of the accident site, at the time of the accident, was within the "serious icing (glide power)" area of the chart.

NTSB Probable Cause Narrative

The pilot’s failure to attain the proper touchdown point, following a loss of engine power due to carburetor icing.

Event Information

Type of Event Accident
Event Date 8/28/2010
Event Day of the Week Saturday
Time of Event 1200
Event Time Zone Eastern Daylight Time
Event City Mocksville
Event State NORTH CAROLINA
Event Country --
Zipcode of the event site 27006
Event Date Year 2010
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 355453N
Event Location Longitude 0802724W
Event Location Airport Twin Lakes
Event Location Nearest Airport ID 8A7
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 818
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1159 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 140
Weather Observation Facility ID EXX
Elevation of weather observation facility 773
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3200
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) 28
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.22
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 28382
NTSB Notification Source FAA/FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 16 2011 12:05PM
User who most recently changed record andj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N85929
NTSB Number ERA10LA504
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 AERONCA
Aircraft Model 11AC
Aircraft Series Identifier --
Aircraft Serial Number 11AC-349
Certified Max Gross Weight 1250
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 Mar 20 2010 12:00AM
Airframe hours since last inspection 10
Airframe Hours 1085
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Walter Hal
Aircraft Owner Street Address --
Aircraft Owner City Harrisburg
Aircraft Owner State NC
Aircraft Owner Country USA
Aircraft Owner Zipcode 28075
Operator is an individual? Yes
Operator Name Walter Hal
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Harrisburg
Operator State NC
Operator Country USA
Operator Zip code 28075
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 8A7
Departure City Mocksville
Departure State NC
Departure Country USA
Departure Time 1000
Departure Time Zone EDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 8A7
Destination City Mocksville
Destination State NC
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 9 2011 2:40PM
User who most recently changed record kenj
Since inspection or accident Last Inspection
Event Location Runway Number and Location 09
Runway Length 2943
Runway Width 50
Sight Seeing flight No
Air Medical Flight No
Medical Flight --