Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Council, Idaho 83612
Monday, August 28, 2000 10:50 MDT
NTSB Narrative Summary Released at Completion of Accident
While in cruise flight, the turbocharged aircraft's manifold pressure began to drop. Although the engine continued to run smoothly, the pilot elected to divert to an alternate airport in order to check things out. When the aircraft was about four miles from the alternate airport, the engine began to run rough, and ultimately ceased producing power. Although the pilot was able to touch down in an open field short of the airport, during the landing roll, the nose wheel encountered an area that had been softened by irrigation, and the aircraft nosed over. During the investigation it was determined that the crankshaft failed due to fatigue crack initiation in the number two main journal cheek. Further inspection revealed that a sealant had been applied to the mating faces of the main bearing saddles the last time the engine was overhauled. Application of this sealant, which is not called for in the engine overhaul manual, lead to a loss of proper crankcase clamping pressure in the area of the main bearing saddle through-bolts. Loss of this pressure resulted in bearing shift and scoring of the crankshaft journal.
NTSB Probable Cause Narrative
the fatigue failure of the crankshaft due to improper overhaul procedures. Factors include a soft area in the field where the forced landing took place.
Event Information
| Type of Event | Accident |
| Event Date | 8/28/2000 |
| Event Day of the Week | Monday |
| Time of Event | 1050 |
| Event Time Zone | Mountain Daylight Time |
| Event City | COUNCIL |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83612 |
| Event Date Year | 2000 |
| Event Date Month | 8 |
| 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 | Witness |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| 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) | 20 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| 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 | 3 |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1008 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Aug 28 2000 12:00AM |
| NTSB Notification Time | 1100 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Jul 2 2001 3:02PM |
| User who most recently changed record | MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N6993N |
| NTSB Number | SEA00LA173 |
| Missing Aircraft Indicator | N |
| 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 | T210N |
| Aircraft Series Identifier | T210N |
| Aircraft Serial Number | 21063202 |
| Certified Max Gross Weight | 4000 |
| 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 | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Aug 1 2000 12:00AM |
| Airframe hours since last inspection | 91 |
| Airframe Hours | 2420 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SCOTT M. PATRICK |
| Aircraft Owner Street Address | 5523 LATIGO DR. |
| Aircraft Owner City | BOISE |
| Aircraft Owner State | ID |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 83709 |
| Operator is an individual? | -- |
| 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 | |
| Owner has at least one certificate | Yes - certificate holder |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | 1S7 |
| Departure City | SLATE CREEK |
| Departure State | ID |
| Departure Country | |
| Departure Time | 1100 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | BOI |
| Destination City | BOISE |
| Destination State | ID |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 2 2001 4:09AM |
| 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 | -- |