Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Bend, Oregon 97701
Monday, June 30, 2008 16:58 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that, during cruise flight, the engine began to run rough as she noticed that the propeller rpm was beyond the red line indication and that oil was coming from the forward cowling area behind the propeller. The oil began coating the windscreen and made forward visibility nearly impossible as the pilot initiated an off-airport landing in an adjacent open field. During the landing roll, the airplane struck a barbed wire fence and came to rest on a two-lane highway, which resulted in substantial damage to the right wing and engine firewall. A postaccident examination of the engine revealed that the crankshaft was cracked about 380 to 400 degrees around the circumference of the forward bearing journal, originating from the oil-through hole and progressing in a direction opposite of the rotation of the crankshaft. A metallurgical examination of the fracture region revealed that the origin of the fracture was consistent with a brittle intergranular fracture through the nitride layer and exhibited numerous crack arrest marks. Beyond the fatigue fracture area, the fracture was on a slant plane consistent with overstress separation. The source of the loading that lead to the initial crack formation at the oil through-hole could not be determined. Review of aircraft logbook records revealed that an engine overhaul was completed on May 1, 2006. The most recent annual inspection of the engine and airframe was conducted on May 30, 2008, 252.3 hours since the engine's last major overhaul.
NTSB Probable Cause Narrative
The failure of the crankshaft during cruise flight due to fatigue.
Event Information
| Type of Event | Accident |
| Event Date | 6/30/2008 |
| Event Day of the Week | Monday |
| Time of Event | 1658 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Bend |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97701 |
| Event Date Year | 2008 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 440540N |
| Event Location Longitude | 1211200W |
| 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 | 1656 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 320 |
| Weather Observation Facility ID | RDM |
| Elevation of weather observation facility | 3080 |
| Distance of event from weather observation facility (units?) | 15 |
| 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) | 34 |
| Dew Point at event time (in degress fahrenheit) | 3 |
| Wind Direction (degrees magnetic) | 20 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 16 |
| Altimeter Setting at event time (in. Hg) | 29.94 |
| 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 | -- |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 25136 |
| NTSB Notification Source | FAA Operations |
| NTSB Notification Date | Jun 30 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Mar 2 2009 5:45PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Portland, Oregon |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7XZ |
| NTSB Number | SEA08LA156 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| 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 | TR182 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | R18201053 |
| Certified Max Gross Weight | 3180 |
| 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 | May 30 2008 12:00AM |
| Airframe hours since last inspection | 21 |
| Airframe Hours | 3793.3 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Spirit Flight Inc. |
| Aircraft Owner Street Address | 777 SE Salmon |
| Aircraft Owner City | Redmond |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97756 |
| Operator is an individual? | No |
| Operator Name | Spirit Flight Inc. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 777 SE Salmon |
| Operator City | Redmond |
| Operator State | OR |
| Operator Country | USA |
| Operator Zip code | 97756 |
| 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 | 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 | RDM |
| Departure City | Redmond |
| Departure State | OR |
| Departure Country | USA |
| Departure Time | 1543 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | -- |
| Destination City | Prineville |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Emergency landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Mar 2 2009 5:45PM |
| User who most recently changed record | stam |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |