Aircraft Accident/Incident Report

Carson, Washington 98648
Wednesday, January 25, 2006 13:44 PST

NTSB Narrative Summary Released at Completion of Accident

During a cross country flight, the pilot was informed by air traffic control that adverse weather was along his route of flight for terrain obscurement in clouds, precipitation, fog or mist. Turbulence was reported below 12,000 feet and occasional moderate rime or mixed icing was reported from the freezing level to 14,000 feet. Further along the route, the pilot reported to another controller that he was at 13,000 feet and descending. The controller inquired if the pilot was aware of the center weather advisory and the reports of severe rime ice in the direction that he was heading. The pilot acknowledged the controller by reporting that he was aware of the weather and that the aircraft was "equipped." The controller continued to inform the pilot of pilot reports from commercial aircraft flight crews of the reports of icing conditions, however, the pilot continued on his routing and again reported that the aircraft was "equipped." During the last transmissions from the pilot, he reported that he was "turning on (de-ice) equipment now." The controller recommended to the pilot to stay clear of the clouds. The pilot responded, "roger." The controller then asked the pilot if he was "going to orbit there for awhile." The pilot responded, "yes," followed by a partially unintelligible transmission of "getting some weather here." The pilot's last transmissions were "Ah, I'm in a little trouble," followed by "Ah, standby 9KM." Radar tracking indicated that the aircraft had been cruising at 16,500 feet before starting a gradual descent. The aircraft descended to 12,700 feet and it began a turn to the right. During this turn, the aircraft's altitude changed rapidly beginning with an increase, followed by a rapid loss of altitude from 8,000 feet per minute descent to 10,600 feet per minute descent before radar contact was lost. The aircraft was found 6 months later in an area of mountainous terrain. On site evidence indicated that the aircraft collided with trees and terrain in a nose low attitude with the majority of the wreckage contained in a large deep crater.

NTSB Probable Cause Narrative

The pilot's failure to maintain aircraft control while maneuvering. Icing conditions, clouds and the pilot's continued flight into known adverse weather were factors.

Event Information

Type of Event Accident
Event Date 1/25/2006
Event Day of the Week Wednesday
Time of Event 1344
Event Time Zone Pacific Standard Time
Event City Carson
Event State WASHINGTON
Event Country --
Zipcode of the event site 98648
Event Date Year 2006
Event Date Month 1
MidAir Collision Indicator --
On Ground Collision occurred ? --
Event Location Latitude 455215N
Event Location Longitude 1220246W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1355 Pacific Standard Time
Direction of event from weather observation facility (degrees) 218
Weather Observation Facility ID PDX
Elevation of weather observation facility 30
Distance of event from weather observation facility (units?) 29
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height 3400
Lowest Non-Ceiling Height 600
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) 160
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 20890
NTSB Notification Source FAA Regional Operations Center
NTSB Notification Date Jan 25 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jan 31 2007 9:40AM
User who most recently changed record NTSB\johb
Basic weather conditions Instrument Meteorological Cond
FAA District Office Hillsboro, Oregon

Aircraft Involved

Aircraft #1

Aircraft Registration Number N69KM
NTSB Number SEA06FA147
Missing Aircraft Indicator Y
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 421C
Aircraft Series Identifier --
Aircraft Serial Number 421C0440
Certified Max Gross Weight 7500
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 1 2005 12:00AM
Airframe hours since last inspection 95
Airframe Hours 5363
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Sugar Financial
Aircraft Owner Street Address 14362 N. Frank Lloyd Wright Blvd
Aircraft Owner City Scottsdale
Aircraft Owner State AZ
Aircraft Owner Country USA
Aircraft Owner Zipcode 85260
Operator is an individual? No
Operator Name Martin A Ayres
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Scottsdale
Operator State AZ
Operator Country USA
Operator Zip code 85255
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 No
Departure Point Same as Event No
Departure Airport Code SDL
Departure City Scottsdale
Departure State AZ
Departure Country USA
Departure Time 1030
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code TIW
Destination City Tacoma
Destination State WA
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 9 2006 8:23PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --