Flat Rock Airstrip Airport
Aircraft Accident/Incident Report

Vernal, Utah 84078
Thursday, July 14, 2005 19:45 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot said he checked the temperature and winds then took off to the south from the dirt airstrip. At rotation, approximately 3 to 4 feet off the ground, the pilot said the airplane encountered a windshear. The pilot said he lost control of the airplane, dropped to the ground to the right of the runway, hit the sagebrush, and nosed over. The passengers on board, who were employees of a drilling company, stated that the wind conditions were "calm" and they "felt no turbulence or shear during this departure." One passenger said that the airplane accelerated in a "zig zag" manner and then lifted off, and that it was smooth once airborne. The passenger said they climbed "20 to 40 feet high, then the airplane abruptly pitched nose down sinking until catching the sage brush ..." Another passenger said the airplane started on the left side of the runway in soft dirt and accelerated along the left side. He said the airplane "lifted off at a slow speed, climbed 30 to 40 feet high, then sunk back to the surface ..." The airstrip had been recently graded. The center of the runway was hard. The sides were soft. According to the drilling company, they had chartered the airplane to fly the drilling crew from the airstrip back to their home in Vernal, Utah. The FAA reported the pilot was not certified to fly under Title 14 CFR Part 135, on-demand air taxi. The winds conditions reported at stations surrounding the airstrip within a radius of 57 miles ranged from calm, to out of the west at 4 knots, to out of the east-southeast at 11 knots. The average temperature in the area was approximately 75 degrees. The estimated density altitude for the area was 9,856 feet. An examination of the airplane showed no pre-impact anomalies.

NTSB Probable Cause Narrative

The pilot's failure to maintain aircraft control during takeoff. Factors contributing to the accident were the soft dirt airstrip, the low airspeed and the stall/mush.

Event Information

Type of Event Accident
Event Date 7/14/2005
Event Day of the Week Thursday
Time of Event 1945
Event Time Zone Mountain Daylight Time
Event City Vernal
Event State UTAH
Event Country --
Zipcode of the event site 84078
Event Date Year 2005
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 393420N
Event Location Longitude 1094319W
Event Location Airport Flat Rock Airstrip
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0.25
Degrees magnetic from airport --
Airport Elevation 7000
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1953 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 351
Weather Observation Facility ID VEL
Elevation of weather observation facility 5278
Distance of event from weather observation facility (units?) 54
Time Zone of the weather observation MDT
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) 21
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.15
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 5
Injury Total None --
Injury Total Serious --
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 18596
NTSB Notification Source FAA Comm Ctr
NTSB Notification Date Jul 15 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 27 2005 6:51AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Salt Lake City, Utah FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1059V
NTSB Number DEN05LA110
Missing Aircraft Indicator Y
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 Cessna
Aircraft Model TU206F
Aircraft Series Identifier --
Aircraft Serial Number U20602429
Certified Max Gross Weight 3600
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 1 2005 12:00AM
Airframe hours since last inspection 24.8
Airframe Hours 8339
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Dinaland Aviation, Inc.
Aircraft Owner Street Address 830 East 500 South
Aircraft Owner City Vernal
Aircraft Owner State UT
Aircraft Owner Country USA
Aircraft Owner Zipcode 84078
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 No
Departure Airport Code --
Departure City Flat Rock
Departure State UT
Departure Country USA
Departure Time 1945
Departure Time Zone --
Destination Same as Local Flt --
Destination Airport Code VEL
Destination City Vernal
Destination State UT
Destination Country USA
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 6 2005 1:43PM
User who most recently changed record MCBM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 150
Runway Length 10000
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --