Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Burns, Oregon 97720
Wednesday, July 29, 1998 12:15 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that during cruise flight, the engine suddenly lost power. He attempted a restart without success. During the forced landing to a road in a canyon, the airplane suddenly lost altitude and touched down hard in sage brush short of the road. During the landing roll, the airplane collided with a barbed wire fence which turned the aircraft perpendicular to the road. After the airplane was recovered, the engine was examined. During the examination, it was found that the crankshaft had failed. The crankshaft was inspected by a metallurgist who reported that the crankshaft was broken through the crankcheek between the number two main bearing journal and the number two connecting rod journal. The metallurgist stated that 'the features over the major portion of the fracture were typical of fatigue cracking that initiated from the aft radius of the number 2 main bearing journal and propagated through more than 90 percent of the crankcheek before final separation.' The metallurgist reported that evidence of fretting was noted on the parting line faces between the connecting rod arm and cap. The joint between the two components could have been loose and may have created spinning of the bearing inserts.
NTSB Probable Cause Narrative
Fatigue failure of the crankshaft.
Event Information
| Type of Event | Accident |
| Event Date | 7/29/1998 |
| Event Day of the Week | Wednesday |
| Time of Event | 1215 |
| Event Time Zone | Pacific Daylight Time |
| Event City | BURNS |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97720 |
| Event Date Year | 1998 |
| Event Date Month | 7 |
| 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 | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1153 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 288 |
| Weather Observation Facility ID | BNO |
| Elevation of weather observation facility | 4144 |
| Distance of event from weather observation facility (units?) | 33 |
| Time Zone of the weather observation | PDT |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 29 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1278 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jul 29 1998 12:00AM |
| NTSB Notification Time | 1317 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 11 2000 11:38AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N756YC |
| NTSB Number | SEA98TA152 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Public Use |
| 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 | TU206G |
| Aircraft Series Identifier | TU206G |
| Aircraft Serial Number | U20604454 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | May 19 1998 12:00AM |
| Airframe hours since last inspection | 53 |
| Airframe Hours | 8544 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | SCOTT W. PATRICK |
| Aircraft Owner Street Address | 5523 LATILO DR. |
| Aircraft Owner City | BOISE |
| Aircraft Owner State | ID |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 83709 |
| Operator is an individual? | -- |
| Operator Name | BLM |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 3833 S. DEVELOPMENT AVE. |
| Operator City | BOISE |
| Operator State | ID |
| Operator Country | |
| Operator Zip code | 83705 |
| Operator Code | |
| Owner has at least one certificate | None |
| 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 | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Public Use |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | S49 |
| Departure City | VALE |
| Departure State | OR |
| Departure Country | |
| Departure Time | 1117 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 22 2001 3:26PM |
| 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 | -- |