Ravalli County Airport
Aircraft Accident/Incident Report

Hamilton, Montana 59840
Thursday, August 27, 2009 19:45 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot performed three off-airport takeoffs and landings on a river sandbar. During his last landing, a main landing gear wheel separated from his amateur-built twin-engine airplane when an attachment weld sheared. Witnesses were located on a river raft and saw that the airplane appeared to touchdown on a sand/gravel bar that was within 75 yards of their location. During this event, one of the airplane's wheels separated and initially traveled toward them, but then veered away and entered the river. Thereafter, the pilot added power and performed a go-around. When the pilot subsequently landed back at the departure airport, he was unable to maintain directional control of his airplane. The airplane impacted objects, and the right side of the fuselage buckled.

NTSB Probable Cause Narrative

The separation of the right main landing gear wheel due to the flight's encounter with soft terrain while landing on an unimproved river sandbar. Contributing to the accident was the pilot's decision to attempt a landing on an unimproved off-airport surface.

Event Information

Type of Event Accident
Event Date 8/27/2009
Event Day of the Week Thursday
Time of Event 1945
Event Time Zone Mountain Daylight Time
Event City Hamilton
Event State MONTANA
Event Country --
Zipcode of the event site 59840
Event Date Year 2009
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 461505N
Event Location Longitude 1140732W
Event Location Airport Ravalli County
Event Location Nearest Airport ID 6S5
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 3642
Weather Briefing Completeness --
Investigator's weather source Pilot
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 --
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) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 26059
NTSB Notification Source NM FAA Duty Officer
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 18 2009 3:20PM
User who most recently changed record coos
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N950TC
NTSB Number WPR09CA421
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name MEYER ROBERT
Aircraft Model AIR CAM
Aircraft Series Identifier --
Aircraft Serial Number AC 126
Certified Max Gross Weight 1660
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 24 2009 12:00AM
Airframe hours since last inspection 89
Airframe Hours 295
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name MEYER ROBERT
Aircraft Owner Street Address --
Aircraft Owner City STUART
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 34994-7612
Operator is an individual? Yes
Operator Name MEYER ROBERT
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City STUART
Operator State FL
Operator Country USA
Operator Zip code 34994-7612
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 Yes
Departure Airport Code 6S5
Departure City Hamilton
Departure State MT
Departure Country USA
Departure Time 1830
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 6S5
Destination City Hamilton
Destination State MT
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 18 2009 3:20PM
User who most recently changed record coos
Since inspection or accident Last Inspection
Event Location Runway Number and Location 34
Runway Length 4200
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --