Aircraft Accident/Incident Report

Monticello, Utah 84535
Thursday, June 2, 1983 17:23 MDT

NTSB Narrative Summary Released at Completion of Accident

THE ACFT CRASHED WHILE DOING MAGNETOMETER SURVEYS AT LOW ALTITUDE. THE RIGHT ENGINE HAD LOST POWER THEN REGAINED IT FOR A SHORT PERIOD AND LOST IT AGAIN. A VIDEOTAPE IN THE ACFT RECORDED THE PLT SAYING, 'I CHANGED THAT # JUST IN TIME.' THE ACFT YAWED AND THE PROPELLER SLOWED AT THE SAME TIME. THE FUEL SELECTOR VALVES WERE FOUND ON THE CENTER TANKS. THE BOOST PUMP SWITCHES WERE FOUND IN THE OFF POSITION. WHEN CHANGING FROM OUTBOARD TO CENTER TANKS THE BOOST PUMPS MUST BE ON OR FUEL STARVATION WILL OCCUR. AS THE ACFT SLOWED THE TAPE REVEALED THAT THE CO-PLT CALLED OUT'DOWN TO 90'. 90 MPH ISVMC. THE ACFT STALLED, SHORTLY AFTER THE ASYMMETRICAL THRUST ROLLED THE ACFT TO THE RIGHT AND INTO THE GROUND.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/2/1983
Event Day of the Week Thursday
Time of Event 1723
Event Time Zone Mountain Daylight Time
Event City MONTICELLO
Event State UTAH
Event Country --
Zipcode of the event site 84535
Event Date Year 1983
Event Date Month 6
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1730 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 119
Weather Observation Facility ID CEZ
Elevation of weather observation facility 5914
Distance of event from weather observation facility (units?) 34
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 12000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 50
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 7493
Intensity of Precipitation Unknown
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 3004
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 23320
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N271VT
NTSB Number DEN83FA131
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 AERO COMMANDER
Aircraft Model 680FL
Aircraft Series Identifier 680FL
Aircraft Serial Number 1435-74
Certified Max Gross Weight 8000
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 2
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 6 1983 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GEODATA INTERNATIONAL,INC.
Aircraft Owner Street Address 7035 JOHN W. CARPENTER FREEWAY
Aircraft Owner City DALLAS
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 75247
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) Business
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code CEZ
Departure City CORTEZ
Departure State CO
Departure Country
Departure Time 1405
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 Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --