Aircraft Accident/Incident Report

Franktown, Colorado 80116
Sunday, July 26, 1998 22:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot flew to Centennial Airport to practice touch and go landings. He departed the airport traffic pattern on an easterly heading, tuned the no. 1 navigation receiver to the Falcon Vortac, and rotated the OBS (Omni Bearing Selector) to 350 degrees. It was his intention to cross the 360 degree radial (sic, 180 degree radial), and then fly direct to the Falcon Vortac and direct to Front Range Airport. This route would avoid the Buckley ANG and Denver International Airport airspace. After he flew what he thought was an easterly heading the evidence indicates it was most probably a south-southeasterly heading) for 8 to 10 minutes and noting the CDI (Course Deviation Indicator) needle had failed to center, he made a shallow 360 degree turn and looked for recognizable landmarks. He then rotated the OBS to go direct to the Falcon Vortac, 'reset the directional gyro to the magnetic compass, making a significant correction,' and descended to 6,500 feet msl. After flying this heading for a minute, the airplane collided with terrain 11 miles southeast of Centennial Airport. Weather conditions at Centennial Airport consisted of clear skies and greater than 10 miles visibility. The pilot said it was a dark night.

NTSB Probable Cause Narrative

Flight at an altitude insufficient to clear terrain. Factors were the pilot's failure to reset or correct a precessing directional gyro, his becoming lost/disoriented, and dark night light conditions.

Event Information

Type of Event Accident
Event Date 7/26/1998
Event Day of the Week Sunday
Time of Event 2200
Event Time Zone Mountain Daylight Time
Event City FRANKTOWN
Event State COLORADO
Event Country --
Zipcode of the event site 80116
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 2300 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 325
Weather Observation Facility ID APA
Elevation of weather observation facility 6520
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation MDT
Lighting Conditions Night/Dark
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) 17
Dew Point at event time (in degress fahrenheit) 15
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 6
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 7720
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 550
NTSB Notification Source --
NTSB Notification Date Jul 27 1998 12:00AM
NTSB Notification Time 114
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Feb 16 2001 11:56AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5147N
NTSB Number FTW98LA335
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 172M
Aircraft Series Identifier 172M
Aircraft Serial Number 17261417
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 Jun 6 1998 12:00AM
Airframe hours since last inspection 90
Airframe Hours 9078
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name PETER CARLSON
Aircraft Owner Street Address 1691 DUNKIRK CT.
Aircraft Owner City AURORA
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 80011
Operator is an individual? --
Operator Name FLIGHT TRAINING, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 5200 FRONT RANGE PKWY
Operator City WATKINS
Operator State CO
Operator Country
Operator Zip code 80137
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 No
Departure Airport Code FTG
Departure City WATKINS
Departure State CO
Departure Country
Departure Time 2045
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 20 2001 6:29PM
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 --