Aircraft Accident/Incident Report

Watkins, Colorado 80137
Thursday, July 2, 1998 19:40 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot landed at Front Range Airport, Watkins, Colorado, refueled, and waited 90 minutes for a thunderstorm to pass. He then took off en route to Englewood, Colorado. He returned to the airport shortly thereafter because he encountered 'steady state precipitation.' He waited for 30 minutes 'until the rain and virga passed and the wind [had] died down.' He took off from runway 17 into a 4 to 6 knot wind from 160 degrees. After climbing about 400 to 500 feet agl, he began to feel the airplane sinking rapidly. He maintained an airspeed of 60 to 65 knots during the descent, and the stall warning horn sounded intermittently. The airplane collided with rising terrain south of the airport. It was the pilot's opinion that he had encountered a microburst. At the time of the accident, Denver International Airport, located 10 miles northwest of Front Range Airport, reported there were several cumulonimbus clouds at 5500 feet in the area, with winds from the east at 20 knots, gusts to 26 knots, and peak winds at 30 knots. A line of cumulonimbus clouds, stretching from the northwest to the northeast, were moving north with rain showers to the northeast.

NTSB Probable Cause Narrative

The pilot's inadequate evaluation of the weather which resulted in an encounter with a microburst. Contributing was the airplane's climb capability exceeded by the microburst, and rising terrain.

Event Information

Type of Event Accident
Event Date 7/2/1998
Event Day of the Week Thursday
Time of Event 1940
Event Time Zone Mountain Daylight Time
Event City WATKINS
Event State COLORADO
Event Country --
Zipcode of the event site 80137
Event Date Year 1998
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1953 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 329
Weather Observation Facility ID DEN
Elevation of weather observation facility 5431
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 11000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
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) 26
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 90
Variable Wind Indicator Unknown
Wind Speed (knots) 20
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 26
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 7772
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 415
NTSB Notification Source --
NTSB Notification Date Jul 2 1998 12:00AM
NTSB Notification Time 2105
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:36AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7780U
NTSB Number FTW98LA295
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172E
Aircraft Series Identifier 172E
Aircraft Serial Number 172251780
Certified Max Gross Weight 2300
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 Mar 14 1998 12:00AM
Airframe hours since last inspection 75
Airframe Hours 5787
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BRADY L. DAVIS
Aircraft Owner Street Address 115 W. GODDING AVE.
Aircraft Owner City TRINIDAD
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 80015
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code FTG
Departure City
Departure State
Departure Country
Departure Time 1940
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code APA
Destination City ENGLEWOOD
Destination State CO
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --