Jefferson County Airport
Aircraft Accident/Incident Report

Broomfield, Colorado 80021
Friday, June 29, 1990 9:15 MDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT, WITH HIS PASSENGER/SON, WAS IN THE LANDING PATTERN AT JEFFERSON COUNTY AIRPORT, BROOMFIELD, COLORADO. HE SAID THAT HE WAS DISTRACTED BY ANOTHER AIRCRAFT IN THE LANDING PATTERN AND FORGOT TO LOWER THE LANDING GEAR. THE AIRCRAFT LANDED WITH THE GEAR UP.

NTSB Probable Cause Narrative

THE FAILURE OF THE PILOT TO EXTEND THE LANDING GEAR FOR LANDING. CONTRIBUTING FACTORS WERE THE PILOT DIVERTING HIS ATTENTION FROM THE TASK AT HAND AND FAILURE TO USE A CHECKLIST.

Event Information

Type of Event Accident
Event Date 6/29/1990
Event Day of the Week Friday
Time of Event 915
Event Time Zone Mountain Daylight Time
Event City BROOMFIELD
Event State COLORADO
Event Country --
Zipcode of the event site 80021
Event Date Year 1990
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport JEFFERSON COUNTY
Event Location Nearest Airport ID BJC
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 5658
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 915 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BJC
Elevation of weather observation facility 5658
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 25000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) -18
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 687
NTSB Notification Source --
NTSB Notification Date Jun 29 1990 12:00AM
NTSB Notification Time 1010
Fiche Number and/or location -used to find docket information 41742
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6391P
NTSB Number DEN90LA148
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 Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA24-250
Aircraft Series Identifier PA24-250
Aircraft Serial Number 24-1501
Certified Max Gross Weight 2900
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 Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DAVID R. TOBLER
Aircraft Owner Street Address 10307 KING COURT
Aircraft Owner City WESTMINISTER
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 80030
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 No
Departure Airport Code ZV2
Departure City LONGMONT
Departure State CO
Departure Country
Departure Time 930
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 29R
Runway Length 9000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --