Aircraft Accident/Incident Report

Little America, Wyoming 82929
Saturday, August 25, 1984 10:30 MDT

NTSB Narrative Summary Released at Completion of Accident

ABOUT 10 MIN AFTER TAKEOFF AT 1005 MDT, THE PLT WAS CLEARED TO CLIMB TO FL 190. THIS WAS ATC'S LAST COMMUNICATION WITH THE ACFT. AT 1030:39, THE CONTROLLER ATTEMPTED TO CONTACT THE PLT TO ADVISE THAT HE HAD LOST RADAR CONTACT & TO RECYCLE THE TRANSPONDER & SQUAWK 6062. THERE WAS NO RESPONSE. TWO WITNESSES REPORTED SEEING THE ACFT JUST BEFORE IT IMPACTED THE GROUND. ACCORDING TO THEM, THEY SAW FIRE &/OR AN EXPLOSION BEFORE IMPACT & ONE WITNESS REPORTED THE ACFT BROKE UP AFTER IT CAME BELOW AN ESTIMATED 1000 TO 1200 FT CEILING. HOWEVER, THE WRECKAGE WAS SCATTERED OVER A 2 MI AREA. AN EXAM REVEALED EVIDENCE OF A CATASTROPHIC IN-FLT BREAKUP FROM OVERLOAD WHICH INCLUDED POSITIVE OVERLOAD OF BOTH WINGS. RADAR DATA SHOWED THAT JUST BEFORE RADAR CONTACT WAS LOST, THE ACFT'S SPEED VARIED BETEEN 221 & 272 KTS, HEADING VARIED FROM 072 TO 014 DEG & VERTICAL VELOCITY VARIED FROM +300 TO -2400 FT/MIN. THUNDERSTORMS, TURBC, RAIN & CLD TOPS TO 25,000' WERE REPORTED. PROBABLE LGT TO MOD ICING IN CLDS ABOVE THE FREEZING LVL (14,000'). ACFT HAD WX RADAR ABOARD.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 8/25/1984
Event Day of the Week Saturday
Time of Event 1030
Event Time Zone Mountain Daylight Time
Event City LITTLE AMERICA
Event State WYOMING
Event Country --
Zipcode of the event site 82929
Event Date Year 1984
Event Date Month 8
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 Full
Investigator's weather source Witness
Time of the weather observation 1100 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 70
Weather Observation Facility ID RKS
Elevation of weather observation facility 6760
Distance of event from weather observation facility (units?) 57
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 1200
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 8564
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 4
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 2900
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 26879
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Unknown
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9150N
NTSB Number DEN84MA266
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion In-flight
Aircraft Manufacturer's Full Name AERO COMMANDER
Aircraft Model 690
Aircraft Series Identifier 690
Aircraft Serial Number 11063
Certified Max Gross Weight 10250
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 8
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Mar 14 1984 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 DR. JAMES P. DEMETRY
Aircraft Owner Street Address 116 VALLEY VIEW DRIVE
Aircraft Owner City OROVILLE
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 95965
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 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 --
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 OGD
Departure City OGDEN
Departure State UT
Departure Country
Departure Time 955
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code ARR
Destination City AURORA
Destination State IL
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 --