Aircraft Accident/Incident Report

Grand Canyon, Arizona 85023
Sunday, December 16, 1984 6:40 MST

NTSB Narrative Summary Released at Completion of Accident

THE PLT RECEIVED A WX BRIEFING AND WAS ADVISED OF MODERATE RIME AND MIXED ICING IN CLOUDS. HE FILED AN IFR FLT PLAN AND DEPARTED. WHILE AT 12000 FT, HE REPORTED ENCOUNTERING SEVERE RIME ICE AND REQUESTED A LOWER ALTITUDE. HE STATED THATHE WAS TRYING TO FLING OFF PROPELLER ICE WHEN RADAR AND RADIO CONTACT WERE LOST. THE WRECKAGE WAS LOCATED IN REMOTE MOUNTAINOUS TERRAIN BY A GROUND PARTY DIRECTED TO THE SITE BY AN AIR FORCE ACFT WHICH MONITERED A ELT SIGNAL.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 12/16/1984
Event Day of the Week Sunday
Time of Event 640
Event Time Zone Mountain Standard Time
Event City GRAND CANYON
Event State ARIZONA
Event Country --
Zipcode of the event site 85023
Event Date Year 1984
Event Date Month 12
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 0
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 553 Mountain Standard Time
Direction of event from weather observation facility (degrees) 175
Weather Observation Facility ID PRC
Elevation of weather observation facility 5042
Distance of event from weather observation facility (units?) 108
Time Zone of the weather observation MST
Lighting Conditions Night/Dark
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) 15
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
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) --
Density Altitude (feet) --
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) 3259
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 27423
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 N4812H
NTSB Number LAX85FA073
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 MOONEY
Aircraft Model M20J
Aircraft Series Identifier M20J
Aircraft Serial Number 24-0887
Certified Max Gross Weight 2740
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 --
Airframe Hours --
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name GARY D. BAUMANN
Aircraft Owner Street Address 2860 S. CARRIAGE LANE
Aircraft Owner City MESA
Aircraft Owner State AZ
Aircraft Owner Country
Aircraft Owner Zipcode 85202
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 FFZ
Departure City MESA
Departure State AZ
Departure Country
Departure Time 505
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code CDC
Destination City CEDAR CITY
Destination State UT
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 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --