Steamboat Springs/Bob Adams Fi Airport
Aircraft Accident/Incident Report

Steamboat Sprng, Colorado 80487
Saturday, July 19, 2003 11:00 MDT

NTSB Narrative Summary Released at Completion of Accident

According to one witness, an airplane, matching the description of the accident airplane, departed an airport near Fort Collins, Colorado, at approximately 0900. A second witness reported that an airplane, matching that same description, landed at an airport near Steamboat Springs, Colorado. According to the second witness, the airplane was on the ground for a short time. During this time, the second witness assisted the pilot in servicing one of the airplane's main landing gear tires with air while one of the passengers took a bathroom break. The pilot did not purchase any fuel for the aircraft. The airplane departed at approximately 1045. According to the local Sheriff's office, at 1116, they received a report of vertically rising black smoke near Rabbit Ears Pass. At approximately 1330, a crew in a firefighting helicopter dispatched to the scene to contain the fire, reported that there was aircraft wreckage in the fire. At approximately 1630, a search and rescue team reported an unknown number of fatalities. Due to the post impact fire, the immediate identification of the aircraft and its occupants was not possible. A serial number, obtained from the airplane's engine, was later used to identify the wreckage. The accident site was located in mountainous terrain at an elevation of approximately 9,500 feet msl. The on-site investigation revealed several damaged trees along a 200-foot debris path preceding the accident site near the crest of a heavily forested mountain valley. No preimpact airframe or engine anomalies were identified. The calculated density altitude, at an airport approximately 27 nautical miles west of the accident site, was 9,152 feet msl.

NTSB Probable Cause Narrative

The pilot's failure to maintain terrain clearance. Contributing factors include the pilot's inadequate preflight planning/preparation, high density altitude, and mountainous conditions.

Event Information

Type of Event Accident
Event Date 7/19/2003
Event Day of the Week Saturday
Time of Event 1100
Event Time Zone Mountain Daylight Time
Event City Steamboat Sprng
Event State COLORADO
Event Country --
Zipcode of the event site 80487
Event Date Year 2003
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 402007N
Event Location Longitude 1064117W
Event Location Airport Steamboat Springs/Bob Adams Fi
Event Location Nearest Airport ID SBS
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 17
Degrees magnetic from airport 320
Airport Elevation 6878
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1115 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 285
Weather Observation Facility ID KHDN
Elevation of weather observation facility 6602
Distance of event from weather observation facility (units?) 27
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) 27
Dew Point at event time (in degress fahrenheit) 28
Wind Direction (degrees magnetic) 60
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30.38
Density Altitude (feet) 9152
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 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 15463
NTSB Notification Source FAA COMM CTR
NTSB Notification Date Jul 19 2003 12:00AM
NTSB Notification Time 1517
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 3 2004 1:28PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Denver FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N742BM
NTSB Number DEN03FA133
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Grumman American
Aircraft Model AA-5B
Aircraft Series Identifier --
Aircraft Serial Number AA-5B-0202
Certified Max Gross Weight 2400
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 12 2002 12:00AM
Airframe hours since last inspection --
Airframe Hours 4159.7
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Walton G. Chun
Aircraft Owner Street Address On File
Aircraft Owner City Santa Clara
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 95050
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 SBS
Departure City STEAMBOAT SPRIN
Departure State CO
Departure Country USA
Departure Time 1043
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code --
Destination City Unknown
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Apr 6 2004 1:02PM
User who most recently changed record MCBM
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 --