Aircraft Accident/Incident Report

Telluride, Colorado 81435
Friday, September 15, 2006 10:33 MDT

NTSB Narrative Summary Released at Completion of Accident

The airplane was on the final leg of a cross-country flight to Telluride, Colorado. Denver Center picked up the airplane on radar approximately 38 miles northwest of Taos, New Mexico, heading toward Pagosa Springs, Colorado, at 15,800 feet. Just southeast of Pagosa Springs, the airplane turned toward the southwest. Approximately 5 minutes later, the airplane resumed a west-northwesterly course toward the Telluride area. Approximately 25 miles south of the Telluride Regional Airport, the airplane made a turn to the north. The airplane had descended to 15,000 feet. One minute later, radar showed the airplane in a 600 foot-per-minute descent that eventually took the airplane below 14,000 feet. Approximately 12 miles south of the airport, the airplane turned to the west-northwest. The airplane was at 13,900 feet on a course toward Wilson Peak and the Lizard Head Pass area. Approximately 3 miles southeast of Wilson Peak (elevation 14,246 feet), radar showed the airplane enter a 2,000 foot-per-minute descent. The airplane's groundspeed increased from 149 to 260 knots. The airplane leveled off momentarily at 13,400 feet and then entered a 2,000 foot-per-minute climb. The airplane's groundspeed was 191 knots. Approximately 12 seconds later, radar contact with the airplane was lost. At last contact, the airplane was at 13,500 feet and within 1 mile of the southeast face of Wilson Peak. Rescue teams located the airplane near the summit of Wilson Peak the following day. Airplane wreckage was located on all sides of the mountain. An examination of the wreckage at the scene showed no pre-impact anomalies. A meteorological study of weather conditions around Wilson Peak at the time of the accident indicated the potential for severe turbulence and rotors.

NTSB Probable Cause Narrative

The pilot's inadvertent flight into mountain wave turbulence resulting in the airplane's loss of control and subsequent impact into mountainous terrain. Factors contributing to the accident were the mountain wave turbulence and high winds.

Event Information

Type of Event Accident
Event Date 9/15/2006
Event Day of the Week Friday
Time of Event 1033
Event Time Zone Mountain Daylight Time
Event City Telluride
Event State COLORADO
Event Country --
Zipcode of the event site 81435
Event Date Year 2006
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 375134N
Event Location Longitude 1075900W
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 1030 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID TEX
Elevation of weather observation facility 9078
Distance of event from weather observation facility (units?) 9
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 4900
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.08
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 4
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 22173
NTSB Notification Source Colorado Civil Air Patrol
NTSB Notification Date Sep 16 2000 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 27 2007 11:30AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Salt Lake City, UT FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5893J
NTSB Number DEN06FA132
Missing Aircraft Indicator Y
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Beech
Aircraft Model 35-C33
Aircraft Series Identifier --
Aircraft Serial Number CD-921
Certified Max Gross Weight 3050
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 2631.3
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name John S. Thompson
Aircraft Owner Street Address 7124 Briarmeadow Drive
Aircraft Owner City Dallas
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 75230
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 SKX
Departure City Taos
Departure State NM
Departure Country USA
Departure Time 902
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code TEX
Destination City Telluride
Destination State CO
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 7 2007 9:59AM
User who most recently changed record BOWL
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --