Hemphill County Airport
Aircraft Accident/Incident Report

Canadian, Texas 79014
Wednesday, May 2, 2007 13:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The single engine experimental light sport airplane was observed departing from the airport in deteriorating weather conditions that consisted of low ceilings, reduced visibility, heavy rain, and lightning southwest of the airport. The pilot, who held an FAA Sport Pilot certificate, did not file a flight plan and there was no record that he obtained a weather briefing from an automated flight service station prior to departure. The purpose of the flight could not be determined; however, witnesses heard and/or observed the airplane depart and then fly in the vicinity of the airport for approximately 15 minutes before it was reported to police that the airplane had crashed approximately 2.3 miles northwest of the airport.about 16 minutes later. There were no known voice communications from the pilot prior to the accident. A review of the wreckage revealed that the airplane came apart in flight before it impacted terrain. The debris was scattered along a heading of 030 degrees for approximately 1.3 miles. Examination of the fractured wing spars and elevator rear attachment points revealed signatures consistent with overload stresses. In addition, examination of the two seatbelt assemblies revealed that they remained securely attached to their respective airframe attachment points, but were not buckled. The seatbelt material was clean, not stretched, and the metal buckles (male and female) did not exhibit any damage. The canopy's locking mechanism was found in the unlocked position. A toxicological exam revealed positive results for the following drugs; bupropion, an antidepressant medication, was detected in the kidney, bupropion metabolite was detected in the kidney and present in the liver; chloroquine, a medication used for the treatment or prevention of malaria, was detected in the liver; and, diphenhydramine, an antihistamine with sedative effects, was detected in the kidney and liver. No blood, urine, or vitreous was available for analysis.

NTSB Probable Cause Narrative

The pilot's improper pre-flight planning and decision to depart into deteriorating weather conditions, which resulted in a loss of control and subsequent in-flight break up.

Event Information

Type of Event Accident
Event Date 5/2/2007
Event Day of the Week Wednesday
Time of Event 1300
Event Time Zone Central Daylight Time
Event City Canadian
Event State TEXAS
Event Country --
Zipcode of the event site 79014
Event Date Year 2007
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 355326N
Event Location Longitude 1002408W
Event Location Airport Hemphill County Airport
Event Location Nearest Airport ID HHF
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 2.2
Degrees magnetic from airport --
Airport Elevation 2394
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1305 Central Standard Time
Direction of event from weather observation facility (degrees) 310
Weather Observation Facility ID HHF
Elevation of weather observation facility 2394
Distance of event from weather observation facility (units?) 2
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 800
Lowest Non-Ceiling Height 200
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 15
Dew Point at event time (in degress fahrenheit) 15
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.93
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) 23635
NTSB Notification Source LBB FSDO
NTSB Notification Date May 2 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record May 28 2008 12:03PM
User who most recently changed record NTSB\johb
Basic weather conditions Instrument Meteorological Cond
FAA District Office Lubbock, Texas

Aircraft Involved

Aircraft #1

Aircraft Registration Number N10028
NTSB Number DFW07LA102
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 Walker
Aircraft Model Zenith Zodiac 601 XL
Aircraft Series Identifier --
Aircraft Serial Number 6-5123
Certified Max Gross Weight 1320
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 Continuous Airworthiness
Date of Last Inspection Mar 1 2007 12:00AM
Airframe hours since last inspection --
Airframe Hours 3542.11
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name McMurphy Consulting
Aircraft Owner Street Address --
Aircraft Owner City Woodward
Aircraft Owner State OK
Aircraft Owner Country USA
Aircraft Owner Zipcode 73801
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) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code HHF
Departure City Canadian
Departure State TN
Departure Country USA
Departure Time 1230
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code HHF
Destination City Canadian
Destination State TN
Destination Country USA
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 14 2008 8:48AM
User who most recently changed record GAMW
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --