Aircraft Accident/Incident Report

Miles City, Montana 59301
Monday, May 9, 2011 9:15 MDT

NTSB Narrative Summary Released at Completion of Accident

The instrument-rated pilot departed to reposition the airplane, which was configured for visual flight rules (VFR) operations only, to its base of operation about 316 miles northwest of the departure airport. Weather conditions at the departure airport were VFR, however, the destination airport and throughout the western portion of the route had deteriorating weather conditions and low cloud ceilings. There was no record of the pilot obtaining a weather brief for the flight; however, while filing a VFR flight plan, the pilot informed the weather briefer that he already had weather information and declined any additional weather information offered by the briefer. A witness located near the accident site heard the sound of an airplane flying low and fast from the east to the west past her home. Shortly after hearing the airplane, she heard a "poof" sound and immediately looked outside for the airplane. The witness stated that she did not see the airplane or any smoke in the area; however, she observed a cloud layer covering the top of the mountain ridge where the accident site was later located. The global positioning system (GPS) track for the flight indicated that during the later portion of the flight, the airplane descended from an altitude of about 5,869 feet mean sea level (msl) to 3,054 feet msl, while conducting several course changes from the northwest to the southwest, most likely as a result of the pilot attempting to avoid or remain clear of the deteriorating weather conditions. The GPS data further showed a climb to an altitude of about 3,241 feet msl before turning left to a westerly heading. About 2 minutes later, the data showed a left turn to the southwest at an altitude of about 3,406 feet msl, where a descent was initiated. The last recorded data point was recorded at an altitude of about 3,284 feet msl. The accident site was located about 0.15 miles southwest of the last recorded GPS position at an elevation of about 3,077 feet msl. A weather report in the area of the accident showed a visibility of 2 miles, mist, overcast cloud layer at 700 feet, and a variable ceiling from 400 feet to 1,100 feet.

NTSB Probable Cause Narrative

The pilot's continued visual flight rules flight into deteriorating weather conditions in an airplane not equipped for instrument flight, which resulted in a collision with terrain.

Event Information

Type of Event Accident
Event Date 5/9/2011
Event Day of the Week Monday
Time of Event 915
Event Time Zone Mountain Daylight Time
Event City Miles City
Event State MONTANA
Event Country --
Zipcode of the event site 59301
Event Date Year 2011
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 462501N
Event Location Longitude 1053813W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 853 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 265
Weather Observation Facility ID KMLS
Elevation of weather observation facility 2630
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 700
Lowest Non-Ceiling Height 700
Sky/Lowest/Cloud Conditions Thin Overcast
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 12
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 50
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.62
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) 30578
NTSB Notification Source FAA Operations
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Oct 11 2012 6:30PM
User who most recently changed record stam
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8523H
NTSB Number WPR11FA221
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AIR TRACTOR INC
Aircraft Model AT-802A
Aircraft Series Identifier --
Aircraft Serial Number 802A-0162
Certified Max Gross Weight 16000
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 26 2011 12:00AM
Airframe hours since last inspection --
Airframe Hours 1407
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91-A
Aircraft Owner Name TAYLOR AVIATION INC
Aircraft Owner Street Address --
Aircraft Owner City FORT BENTON
Aircraft Owner State MT
Aircraft Owner Country USA
Aircraft Owner Zipcode 59442-0159
Operator is an individual? No
Operator Name TAYLOR AVIATION INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City FORT BENTON
Operator State MT
Operator Country USA
Operator Zip code 59442-0159
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) Positioning
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code ABR
Departure City Aberdeen
Departure State SD
Departure Country USA
Departure Time 752
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Miles City
Destination State MT
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 11 2012 5:53PM
User who most recently changed record stam
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --