Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Nenana, Alaska 99760
Friday, October 14, 2005 9:30 AKD
NTSB Narrative Summary Released at Completion of Accident
In preparation for a cross-country personal flight in an amateur built experimental airplane, the private certificated pilot preheated the engine, conducted a preflight, and started the engine to warm it up. After departure, he leveled the airplane in cruise flight, with an outside ambient temperature of about 12 degrees F. About 15 minutes after takeoff, the engine lost power and the propeller stopped. The pilot attempted to restart the engine, but it would not rotate, and he selected an area of small trees for a forced landing. Following the accident, the pilot said he noticed oil covering the belly of the airplane. The airplane was equipped with a remote oil filter housing which was designed for racing/automotive use, and was mounted on the firewall for ease of servicing. The filter is comprised of a rectangular cast aluminum housing. The center of each half of the housing has a raised horizontal rib along the longest axis of the case that incorporates an oil passage. An examination of the housing revealed a vertical, 1.25 inch crack in the center rib of the upper housing half. The crack was also visible on the inside of the housing in the center of the horizontal oil passage. The inner and outer filter screen rubber gaskets were undamaged. The mechanism for the initiation of the crack was not determined.
NTSB Probable Cause Narrative
A loss of engine power during cruise flight due to a cracked oil filter housing and subsequent loss of engine oil, which resulted in a forced landing in trees.
Event Information
| Type of Event | Accident |
| Event Date | 10/14/2005 |
| Event Day of the Week | Friday |
| Time of Event | 930 |
| Event Time Zone | -- |
| Event City | Nenana |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99760 |
| Event Date Year | 2005 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 644500N |
| Event Location Longitude | 1495300W |
| 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 | 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 | 3000 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 50 |
| Air Temperature at event time (in degrees celsius) | -11 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Calm |
| 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) | 19307 |
| NTSB Notification Source | FAA Regional Operations Center |
| NTSB Notification Date | Oct 14 2005 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Mar 28 2006 1:55PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA-AL-FAI FSDO 01 |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N239PT |
| NTSB Number | ANC06LA005 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Crisenbery |
| Aircraft Model | Northman 2+2 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 597 |
| Certified Max Gross Weight | 2175 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 1 2005 12:00AM |
| Airframe hours since last inspection | 110 |
| Airframe Hours | 410 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Yes |
| ELT Type | -- |
| Aircraft Owner Name | Christopher J. Gossen |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Fairbanks |
| Aircraft Owner State | AK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 99709 |
| 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 | -- |
| Owner has at least one certificate | None |
| 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 | -- |
| 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 | -- |
| Departure City | Nenana |
| Departure State | AK |
| Departure Country | USA |
| Departure Time | 915 |
| Departure Time Zone | ADT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PAFA |
| Destination City | Fairbanks |
| Destination State | AK |
| Destination Country | USA |
| Specific Phase of Flight | Emergency descent/landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 13 2006 3:03PM |
| User who most recently changed record | PETL |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |