Aircraft Accident/Incident Report

Stanley, Idaho 83278
Saturday, September 6, 1997 19:15 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot departed from an airport at which the density altitude was approximately 8,500 feet. Because winds were gusting to 15 knots from the west, and because the airport was situated in a valley just east of some 11,000 foot peaks, there were terrain-induced downdrafts and unfavorable winds present at the time of departure. Soon after takeoff, the aircraft, which was loaded to within 120 pounds of maximum allowable gross weight, entered an area of sinking air. The aircraft then quickly descended to just a few feet above the ground, and its airspeed dropped to about 40 m.p.h. As the aircraft continued to slow, it became obvious to the pilot that it would soon descend into the terrain, so he chose a spot in which to '...put it down.' After a successful touchdown, the aircraft rolled over soft terrain, where the nose gear sank into the ground and a wing collided with the terrain.

NTSB Probable Cause Narrative

The pilot's inadequate planning/decision for taking off in the meteorological conditions present at the time. Factors include a high density altitude, gusty winds, downdrafts, and soft terrain in the area of the forced landing.

Event Information

Type of Event Accident
Event Date 9/6/1997
Event Day of the Week Saturday
Time of Event 1915
Event Time Zone Mountain Daylight Time
Event City STANLEY
Event State IDAHO
Event Country --
Zipcode of the event site 83278
Event Date Year 1997
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 6500
Weather Briefing Completeness Unknown
Investigator's weather source Witness
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 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
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) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 8500
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1047
NTSB Notification Source --
NTSB Notification Date Sep 8 1997 12:00AM
NTSB Notification Time 800
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:34PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7494Q
NTSB Number SEA97LA205
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model U206F
Aircraft Series Identifier U206F
Aircraft Serial Number U20602224
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 3 1997 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name STANLEY AIR TAXI, INC.
Aircraft Owner Street Address PO BOX 30
Aircraft Owner City STANLEY
Aircraft Owner State ID
Aircraft Owner Country
Aircraft Owner Zipcode 83278
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 IKOA
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 Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 2U7
Departure City
Departure State
Departure Country
Departure Time 1913
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code S81
Destination City INDIAN CREEK
Destination State ID
Destination Country
Specific Phase of Flight Landing
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 --