Walker Field Airport
Aircraft Accident/Incident Report

Grand Junction, Colorado 81506
Saturday, October 31, 1992 8:15 MST

NTSB Narrative Summary Released at Completion of Accident

THE COMMUTER AIR CARRIER DEPARTED MOAB, UTAH, AND FLEW TO GRAND JUNCTION, CO, VIA RNAV DIRECT MACKS INTERSECTION. AFTER CROSSING MACKS INTERSECTION, THE AIRPLANE TURNED RIGHT BUT INSTEAD OF INTERCEPTING THE LOCALIZER COURSE, THE AIRPLANE CONTINUED ON A SLIGHTLY DIVERGENT TRACK TO THE EAST OF THE LOCALIZER. THE PILOT TOLD CONTROL TOWER PERSONNEL, 'I'M SHOWING TWELVE MILES OUT ON THE ILS...GETTING REAL...ERRONEOUS SIGNAL, HERE. ANY COMPLAINTS?' THE PILOT WAS ADVISED NO DIFFICULTY REPORTS HAD BEEN RECEIVED. THE AIRPLANE IMPACTED A MESA ONE MINUTE LATER ABOUT FIVE MILES TO THE LEFT OF THE LOCALIZER COURSE. THE COCKPIT WAS DESTROYED AND NO MEANINGFUL INFORMATION WAS OBTAINED FROM THE NAVIGATIONAL RADIOS. ALL OF THE AIRPORT'S NAVIGATIONAL AIDS WERE LATER FLIGHT CHECKED AND NO DISCREPANCIES WERE FOUND. ALTHOUGH VMC PREVAILED AT THE AIRPORT, THE ACCIDENT SITE WAS ABOVE THE REPORTED CEILING HEIGHT.

NTSB Probable Cause Narrative

IMPROPER IFR PROCEDURE AND RESULTANT DISORIENTATION WHICH RESULTED IN A COLLISION WITH TERRAIN.

Event Information

Type of Event Accident
Event Date 10/31/1992
Event Day of the Week Saturday
Time of Event 815
Event Time Zone Mountain Standard Time
Event City GRAND JUNCTION
Event State COLORADO
Event Country --
Zipcode of the event site 81506
Event Date Year 1992
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport WALKER FIELD
Event Location Nearest Airport ID GJT
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 10
Degrees magnetic from airport 340
Airport Elevation 4858
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 843 Mountain Standard Time
Direction of event from weather observation facility (degrees) 170
Weather Observation Facility ID GJT
Elevation of weather observation facility 4858
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 2400
Lowest Non-Ceiling Height 1100
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 6
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 11
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 4916
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 764
NTSB Notification Source --
NTSB Notification Date Oct 31 1992 12:00AM
NTSB Notification Time 1000
Fiche Number and/or location -used to find docket information 48228
Date of most recent change to record Dec 11 2000 3:23PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N250TJ
NTSB Number DEN93FA009
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-42
Aircraft Series Identifier PA-42
Aircraft Serial Number 42-8001024
Certified Max Gross Weight 11200
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 11
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Oct 15 1992 12:00AM
Airframe hours since last inspection 43
Airframe Hours 4784
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name CLB CORPORATION
Aircraft Owner Street Address 487 E. ROBIN ROAD
Aircraft Owner City OREM
Aircraft Owner State UT
Aircraft Owner Country
Aircraft Owner Zipcode 84057
Operator is an individual? --
Operator Name ALPINE AVIATION
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P. O. BOX 691
Operator City PROVO
Operator State UT
Operator Country
Operator Zip code 84603
Operator Code TIMA
Owner has at least one certificate Yes - certificate holder
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code OAB
Departure City MOAB
Departure State UT
Departure Country
Departure Time 757
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
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 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --