Individually Owned: 150,657
Corporate Owned: 137,281
Private Airport
Aircraft Accident/Incident Report
Shearer, Idaho 83525
Wednesday, May 30, 2007 16:30 PDT
NTSB Narrative Summary Released at Completion of Accident
The left main landing gear separated during the landing roll. Post accident metallurgical examination showed that the fracture occurred due to fatigue cracks that emanated from the chamfer areas at two bolt hole locations on the inboard side of the strut. The period of time that was required to cause propagation of the fatigue crack regions was not determined, but most of the brown region fractured in a single event. Because this was in existence for very few flight cycles, a visual inspection of the lower surfaces of the spring strut would have to have been conducted just before the accident flight in order to detect the crack, and even then, it would have been difficult to see. All of the small fatigue cracks at the origin areas were covered by the washers and would not have been visually detectable. Although the Safety Board issued previous recommendations about this issue, the Federal Aviation Administration reported that the visual inspections called out in the maintenance manuals are, "...adequate to detect cracks in the main landing gear struts and that additional airworthiness action is not warranted." On March 25, 2002, the NTSB responded by stating, in part: "The Safety Board continues to believe that a visual inspection alone will not detect cracks in the Cessna main landing gear spring struts. However, the Safety Board acknowledges that the statistical evidence does not warrant issuance of ADs at this time as called for in the Board's recommendation." The safety recommendation was then classified as: "Closed-Reconsidered."
NTSB Probable Cause Narrative
A fracture and separation of the left main landing gear strut during the landing roll due to fatigue.
Event Information
| Type of Event | Accident |
| Event Date | 5/30/2007 |
| Event Day of the Week | Wednesday |
| Time of Event | 1630 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Shearer |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83525 |
| Event Date Year | 2007 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 455615N |
| Event Location Longitude | 1144980W |
| Event Location Airport | private |
| Event Location Nearest Airport ID | -- |
| 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 | 2855 |
| 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) | 24 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | 1 |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 22824 |
| NTSB Notification Source | FAA NWR Operations Center |
| NTSB Notification Date | May 30 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jan 30 2008 4:08PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-GEG-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N104DE |
| NTSB Number | SEA07LA140 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | VFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | A185F |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 18504009 |
| Certified Max Gross Weight | 3350 |
| 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 | Jan 1 2007 12:00AM |
| Airframe hours since last inspection | 33.8 |
| Airframe Hours | 8013.7 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Osprey Aviation LLC |
| Aircraft Owner Street Address | 444 Lost Horse Road |
| Aircraft Owner City | Hamilton |
| Aircraft Owner State | MT |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 59840 |
| Operator is an individual? | No |
| 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 | OYEA |
| Owner has at least one certificate | -- |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | -- |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | MSO |
| Departure City | Missoula |
| Departure State | MT |
| Departure Country | USA |
| Departure Time | 1545 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PVT |
| Destination City | North Star Rch |
| Destination State | ID |
| Destination Country | USA |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 10 2007 1:59PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | -- |
| Runway Length | 1700 |
| Runway Width | 60 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |