Aircraft Accident/Incident Report

Aniak, Alaska 99577
Wednesday, September 20, 1995 16:00 AKD

NTSB Narrative Summary Released at Completion of Accident

The pilot was attempting to takeoff from a remote lake towards rising terrain. He had made an earlier flight in the same direction with winds estimated at 7 to 10 knots. The initial flight was made without incident. The pilot said that soon after takeoff on the accident flight, he suddenly encountered winds estimated at 40 knots. Also, he said that an associated downdraft would not allow the airplane to climb away from the rising terrain, and that he elected to land in the tundra instead of continuing into higher terrain.

NTSB Probable Cause Narrative

The pilot's inadequate weather evaluation. Factors associated with the accident were: the box canyon, rising terrain, wind gusts, and downdrafts.

Event Information

Type of Event Accident
Event Date 9/20/1995
Event Day of the Week Wednesday
Time of Event 1600
Event Time Zone --
Event City ANIAK
Event State ALASKA
Event Country --
Zipcode of the event site 99577
Event Date Year 1995
Event Date Month 9
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 Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 135
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 40
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1651
NTSB Notification Source --
NTSB Notification Date Sep 20 1995 12:00AM
NTSB Notification Time 1900
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 7 2000 4:34PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N56564
NTSB Number ANC95LA172
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name MAULE
Aircraft Model M-7-235
Aircraft Series Identifier M-7-235
Aircraft Serial Number 4010C
Certified Max Gross Weight 2750
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 26 1995 12:00AM
Airframe hours since last inspection 66
Airframe Hours 1250
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name RICHARD A. TOWNSEND
Aircraft Owner Street Address P.O. BOX 93
Aircraft Owner City ANIAK
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99557
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 Yes - certificate holder
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1555
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code ANI
Destination City
Destination State
Destination Country
Specific Phase of Flight Takeoff
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 --