Aircraft Accident/Incident Report

Manville, Wyoming 82227
Thursday, July 23, 1992 15:15 MDT

NTSB Narrative Summary Released at Completion of Accident

DURING A CROSS COUNTRY BUSINESS FLIGHT, WHICH WAS FILED AND FLOWN UNDER INSTRUMENT FLIGHT RULES, THE PILOT AND CONTROLLER HAD NUMEROUS COMMUNICATIONS REGARDING ROUTING AND WEATHER, AND THE AIRCRAFT WAS CIRCUMNAVIGATING WEATHER AREAS. THE PILOT REPORTED ENTERING WHAT HIS STORMSCOPE SHOWED AS A 'CLEAR' AREA AFTER ENCOUNTERING RAIN AND MODERATE TURBULENCE AT TEMPERATURES CONDUCIVE TO STRUCTURAL ICING. THE CONTROLLER NOTED A 1,000 FOOT LOSS OF ALTITUDE FROM THE ASSIGNED CRUISE ALTITUDE OF 17,000 FEET, FOLLOWED BY A LOSS OF ALTITUDE READOUT. SHORTLY THEREAFTER THE AIRCRAFT DISAPPEARED FROM THE CONTROLLER'S RADAR SCOPE. THE WRECKAGE WAS FOUND NEAR THE LAST RADAR FIX. THE AIRPLANE IMPACTED IN A NEAR VERTICAL DESCENT.

NTSB Probable Cause Narrative

A LOSS OF CONTROL FOLLOWING FLIGHT INTO WEATHER CONDITIONS CONTAINING THUNDERSTORMS, TURBULENCE AND ICING CONDITIONS. FACTORS WERE: INACCURATE WEATHER EVALUATION AND FLIGHT INTO KNOWN ADVERSE WEATHER BY THE PILOT IN COMMAND.

Event Information

Type of Event Accident
Event Date 7/23/1992
Event Day of the Week Thursday
Time of Event 1515
Event Time Zone Mountain Daylight Time
Event City MANVILLE
Event State WYOMING
Event Country --
Zipcode of the event site 82227
Event Date Year 1992
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1550 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID CPR
Elevation of weather observation facility 5348
Distance of event from weather observation facility (units?) 80
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 6000
Sky/Lowest/Cloud Conditions Scattered
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) 28
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 24
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 8000
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) 2613
NTSB Notification Source --
NTSB Notification Date Jul 23 1992 12:00AM
NTSB Notification Time 2300
Fiche Number and/or location -used to find docket information 47344
Date of most recent change to record Dec 11 2000 3:04PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N560CM
NTSB Number DEN92FA076
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 None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AERO COMMANDER
Aircraft Model 560-F
Aircraft Series Identifier 560-F
Aircraft Serial Number 1311-61
Certified Max Gross Weight 7500
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 7
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 5 1991 12:00AM
Airframe hours since last inspection 111
Airframe Hours 4538
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MCLAUGHLIN CONSTRUCTION CO.
Aircraft Owner Street Address N1578 COUNTY A
Aircraft Owner City WAUPACA
Aircraft Owner State WI
Aircraft Owner Country
Aircraft Owner Zipcode 54981
Operator is an individual? --
Operator Name MCLAUGHLIN CONSTRUCTION CO.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
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 SLC
Departure City SALT LAKE CITY
Departure State UT
Departure Country
Departure Time 1347
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code PCZ
Destination City WAUPACA
Destination State WI
Destination Country
Specific Phase of Flight Cruise
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 --