Big Piney Airport
Aircraft Accident/Incident Report

Big Piney, Wyoming 83113
Thursday, September 7, 2000 19:45 MDT

NTSB Narrative Summary Released at Completion of Accident

During takeoff roll, at about 95 knots, the aircraft collided with two antelope. The antelope were crossing the runway from left to right and the aircraft impacted them with the nose landing gear and right engine propeller. Damage occurred to the nose gear assembly, nose wheel well keel beam and right engine propeller. Dusk conditions existed at the time and the visibility was approximately 10 miles. There was no animal protective fencing or other animal control devices installed at the airport which is uncontrolled.

NTSB Probable Cause Narrative

Collision with animals during the takeoff roll.

Event Information

Type of Event Accident
Event Date 9/7/2000
Event Day of the Week Thursday
Time of Event 1945
Event Time Zone Mountain Daylight Time
Event City BIG PINEY
Event State WYOMING
Event Country --
Zipcode of the event site 83113
Event Date Year 2000
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport BIG PINEY
Event Location Nearest Airport ID BPI
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 6990
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1953 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 130
Weather Observation Facility ID BPI
Elevation of weather observation facility 6990
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation MDT
Lighting Conditions Dusk
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 8400
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 305
NTSB Notification Source FAA, NW OPERATIONS CENTER
NTSB Notification Date Sep 7 2000 12:00AM
NTSB Notification Time 2200
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Mar 4 2001 7:07AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N844YT
NTSB Number DEN00LA166
Missing Aircraft Indicator N
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 340A
Aircraft Series Identifier 340A
Aircraft Serial Number 1271
Certified Max Gross Weight 6390
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Sep 5 2000 12:00AM
Airframe hours since last inspection 8
Airframe Hours 4550
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name TRUE DRILLING, LLC
Aircraft Owner Street Address P.O. BOX 2360
Aircraft Owner City CASPER
Aircraft Owner State WY
Aircraft Owner Country
Aircraft Owner Zipcode 82602
Operator is an individual? --
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? No
Certified for Part 133 or 137 Operation Unknown
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 Q
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code CPR
Destination City CASPER
Destination State WY
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 4 2001 7:07AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 31
Runway Length 6803
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --