Aircraft Accident/Incident Report

Chacon, New Mexico 87223
Saturday, December 21, 1996 13:00 MST

NTSB Narrative Summary Released at Completion of Accident

The airplane collided with rugged, mountainous terrain while on a VFR cross country flight. According to all available information, the airplane was en route at an altitude between 9,000 and 13,000 feet MSL. Mountain peaks along the route of flight were in the 9,000 to 13,000 foot range. Area Pilot Reports (PIREPS) 16 for light airplanes, and weather observations confirmed that the airplane had flown into about 50-55 knot upper level headwinds, and through moderate to severe turbulence. One PIREP indicated that 'up' and 'down' drafts exceeded 1,000 feet per minute. Another PIREP indicated that 'stacked lenticular clouds were observed at a magnitude that he had not seen before.' According to the NTSB Meteorology Factual Report, the airplane was in severe to extreme turbulent air, and that mountain wave conditions may have been present at the time of the accident. The 8,200 hour pilot was familiar with the route of flight, and no condition of incapacitation was found during the autopsy. Examination of the airframe, engine, and propeller did not reveal any evidence of pre-impact failure(s).

NTSB Probable Cause Narrative

The pilot's failure to maintain altitude and clearance from the high, mountainous terrain. Factors were; high wind, turbulence, and mountain wave conditions.

Event Information

Type of Event Accident
Event Date 12/21/1996
Event Day of the Week Saturday
Time of Event 1300
Event Time Zone Mountain Standard Time
Event City CHACON
Event State NEW MEXICO
Event Country --
Zipcode of the event site 87223
Event Date Year 1996
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1250 Mountain Standard Time
Direction of event from weather observation facility (degrees) 110
Weather Observation Facility ID LVS
Elevation of weather observation facility 6873
Distance of event from weather observation facility (units?) 34
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height 15000
Lowest Non-Ceiling Height 7000
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) 35
Air Temperature at event time (in degrees celsius) 8
Dew Point at event time (in degress fahrenheit) -12
Wind Direction (degrees magnetic) 290
Variable Wind Indicator Unknown
Wind Speed (knots) 23
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 38
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 16212
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 6
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 6
Investigating Agency NTSB
NTSB Docket Number (internal use) 2021
NTSB Notification Source --
NTSB Notification Date Dec 22 1996 12:00AM
NTSB Notification Time 1121
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:29AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3869A
NTSB Number FTW97FA067
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Beech
Aircraft Model A36
Aircraft Series Identifier A36
Aircraft Serial Number E-1853
Certified Max Gross Weight 3600
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 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 27 1996 12:00AM
Airframe hours since last inspection 50
Airframe Hours 3739
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name SEWALL M. OSGOOD
Aircraft Owner Street Address 16614 NORTH DESERT HOLLY DR.
Aircraft Owner City SUN CITY
Aircraft Owner State AZ
Aircraft Owner Country
Aircraft Owner Zipcode 85351
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 RTN
Departure City RATON
Departure State NM
Departure Country
Departure Time 1200
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code GEU
Destination City GLENDALE
Destination State AZ
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --