Cavanaugh Bay Airport
Aircraft Accident/Incident Report

Coolin, Idaho 83821
Sunday, March 25, 2012 15:00 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot stated that he did not call the destination airport for airport conditions. Upon arrival, he flew over the snow-covered runway to check the runway surface. He noted snowmobile tracks and patches of grass through the snow. After touching down, the airplane rolled for about 250 feet before the tires sunk into the snow. The airplane nosed over and came to rest on its back. The airplane’s right wing struts, vertical stabilizer, rudder and both wing tips were bent.

NTSB Probable Cause Narrative

The pilot’s decision to land on a snow-covered runway.

Event Information

Type of Event Accident
Event Date 3/25/2012
Event Day of the Week Sunday
Time of Event 1500
Event Time Zone Pacific Daylight Time
Event City Coolin
Event State IDAHO
Event Country --
Zipcode of the event site 83821
Event Date Year 2012
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 483114N
Event Location Longitude 1164922W
Event Location Airport Cavanaugh Bay Airport
Event Location Nearest Airport ID 66S
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 2484
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1455 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 145
Weather Observation Facility ID SZT
Elevation of weather observation facility 2131
Distance of event from weather observation facility (units?) 18
Time Zone of the weather observation PDT
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) 13
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 30
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 13
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) 29.67
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 29790
NTSB Notification Source FAA
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 19 2012 2:40PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N97032
NTSB Number WPR12CA148
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name STINSON
Aircraft Model 108-1
Aircraft Series Identifier --
Aircraft Serial Number 108-1032
Certified Max Gross Weight --
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 --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Dallas W. Deardorff
Aircraft Owner Street Address --
Aircraft Owner City Plains
Aircraft Owner State MT
Aircraft Owner Country USA
Aircraft Owner Zipcode 59859
Operator is an individual? No
Operator Name Dallas W. Deardorff
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Plains
Operator State MT
Operator Country USA
Operator Zip code 59859
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 GEG
Departure City Spokane
Departure State WA
Departure Country USA
Departure Time 1400
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 66S
Destination City Coolin
Destination State ID
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 19 2012 2:40PM
User who most recently changed record coos
Since inspection or accident --
Event Location Runway Number and Location 33
Runway Length 3100
Runway Width 120
Sight Seeing flight No
Air Medical Flight No
Medical Flight --