Aircraft Accident/Incident Report

Yellow Pine, Idaho 83677
Thursday, June 14, 2007 8:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The day before the accident, the pilot and passenger had arrived in the airplane at a back country airport and set up camp with the intention of flying in the remote mountainous back country for several days. According to his logbook, this was the second time the pilot had made this type of trip, with the previous trip about 11 months prior. The purpose of the accident flight was to fly to another back country airport about 15 nautical miles to the north, have breakfast at a lodge, and then return. The pilot did not file a flight plan, and although the passenger thought other pilots knew their destination and intended time of return, this was not the case. The passenger stated that other airplanes departed first, and then they took off. She recalled that they were flying inside the canyon walls and made several turns. As they headed up a drainage, the pilot told her it was the "wrong drainage." The stall warning horn came on, and there was "no time or room to turn around." The airplane could not out climb the rising terrain and impacted the ground. The pilot sustained a skull fracture and died about 10 to 12 hours after the crash. The passenger's was injured but ambulatory, and stayed with the airplane to await rescue. A search for the airplane was not started until 2 days after the accident, when the caretaker at the departure airport noted that the couple's camping gear was still at the airport. The wreckage was located by an aerial search airplane 3 days after the accident. The accident site was about 8 nautical miles north of the departure airport, at an elevation of approximately 8,000 feet on the south side of an east-west ridgeline. Examination of the airframe and engine revealed no evidence of any malfunctions or failures that would have prevented normal operation. No emergency locator transmitter (ELT) signal was received from the airplane. The ELT was tested and found to function normally; the reason it did not activate upon impact could not be determined. The passenger reported that she was not aware of the location or function of the ELT, and therefore, she did not attempt to activate it manually. The passenger stated that there was a survival kit in the airplane, which she was aware of and made use of, during the 3 days she spent waiting for rescue.

NTSB Probable Cause Narrative

The pilot's selection of the wrong routing through mountainous terrain and his failure to maintain adequate terrain clearance.

Event Information

Type of Event Accident
Event Date 6/14/2007
Event Day of the Week Thursday
Time of Event 830
Event Time Zone Mountain Daylight Time
Event City Yellow Pine
Event State IDAHO
Event Country --
Zipcode of the event site 83677
Event Date Year 2007
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 450245N
Event Location Longitude 1152724W
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 850 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID MYL
Elevation of weather observation facility 5024
Distance of event from weather observation facility (units?) 26
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 12
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.08
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 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 23715
NTSB Notification Source FAA ROC
NTSB Notification Date Jun 17 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 30 2008 11:48AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Boise FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6233E
NTSB Number SEA07FA165
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172
Aircraft Series Identifier --
Aircraft Serial Number 46333
Certified Max Gross Weight 2200
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 4996
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Berkeley H. Snow
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? Yes
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Laytonville
Operator State CA
Operator Country USA
Operator Zip code --
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 3U2
Departure City Yellow Pine
Departure State ID
Departure Country USA
Departure Time 815
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code U60
Destination City Big Creek
Destination State ID
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 29 2008 12:05PM
User who most recently changed record STAM
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --