Aircraft Accident/Incident Report

Skwentna, Alaska 99667
Friday, September 15, 2006 16:20 AKD

NTSB Narrative Summary Released at Completion of Accident

The private pilot and the sole passenger were in the first of two airplanes of a flight of two, operating as a personal flight under Title 14, CFR part 91. The pilot of the second airplane reported that both airplanes were in radio contact, and the accident airplane was about one mile ahead as they entered a mountain pass along the intended flight route. As the flight progressed, both airplanes descended due to deteriorating weather conditions as they neared the narrowest part of the pass. The second pilot said that visibility deteriorated to a point that it was difficult to discern topographical features, and he told the accident pilot that he was uncomfortable with the lack of visibility and was turning around. The second pilot stated that the accident pilot responded by saying, in part: "Turn around if you can... I am not able to." The second pilot indicated that the last time he saw the accident airplane was as it entered a cloudbank. During the accident pilot's final radio transmission, prompted by the second pilot's inquiry about how he was doing, he responded that he was just trying to get through the pass. No further radio communications were received from the accident airplane. There was no ELT signal, and the search for the airplane was unsuccessful until three days later. The wreckage was located at the 3,100-foot level of the mountain pass, in an area of steep terrain. Impact forces and a postcrash fire had destroyed the airplane. During the IIC's on-site examination of the wreckage, no preaccident mechanical anomalies were discovered.

NTSB Probable Cause Narrative

The pilot's continued VFR flight into instrument meteorological conditions, which resulted in an in-flight collision with mountainous terrain. A factor associated with the accident was a low cloud ceiling.

Event Information

Type of Event Accident
Event Date 9/15/2006
Event Day of the Week Friday
Time of Event 1620
Event Time Zone --
Event City Skwentna
Event State ALASKA
Event Country --
Zipcode of the event site 99667
Event Date Year 2006
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 623450N
Event Location Longitude 1523500W
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 Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Obscured
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21726
NTSB Notification Source ANC FAA, ROC
NTSB Notification Date Sep 16 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 27 2007 1:15PM
User who most recently changed record NTSB\lema
Basic weather conditions Instrument Meteorological Cond
FAA District Office Anchorage FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N836KA
NTSB Number ANC06FA131
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 de Havilland
Aircraft Model DHC-2
Aircraft Series Identifier --
Aircraft Serial Number 604
Certified Max Gross Weight 5370
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 1 2006 12:00AM
Airframe hours since last inspection 47.8
Airframe Hours 34896.9
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name 20 Whiskey Mike LLC
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99507
Operator is an individual? No
Operator Name Alex T. Stack
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Anchorage
Operator State AK
Operator Country USA
Operator Zip code 99516
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code GAL
Departure City GALENA
Departure State AK
Departure Country USA
Departure Time 1400
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code LHD
Destination City ANCHORAGE
Destination State AK
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 15 2007 9:23PM
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 --