Individually Owned: 151,845
Corporate Owned: 143,699
Aircraft Accident/Incident Report
Lowell, Idaho 83539
Thursday, September 24, 1992 9:15 MDT
NTSB Narrative Summary Released at Completion of Accident
WHILE ESTABLISHED IN CRUISE AT 14,000 FEET AND 21 INCHES OF MANIFOLD PRESSURE, BOTH ENGINES ABRUPTLY LOST POWER. THE AIRCRAFT WAS FLYING IN SNOW AT THE TIME AND THE OUTSIDE AIR TEMPERATURE WAS REPORTED AS APPROXIMATELY 0 DEGREES FAHRENHEIT. THE AIRCRAFT DESCENDED TO 3000 FEET MSL AND DURING THE DESCENT ENGINE POWER WAS REGAINED. THE AIRCRAFT BROKE OUT OF AN UNDERCAST WITH APPROXIMATELY 800 FEET OF VERTICAL AND 1 SQUARE MILE OF LATERAL AIRSPACE IN WHICH TO MANEUVER IN, AND WITH UPSLOPING TERRAIN SURROUNDING THE AIRCRAFT THE PILOT ELECTED TO EXECUTE A PRECAUTIONARY LANDING AT AN ABANDONED AIRSTRIP NEARBY. DURING THE LANDING ROLL THE AIRCRAFT IMPACTED SMALL TREES WHICH HAD GROWN UP IN THE LANDING AREA. POST CRASH INVESTIGATION REVEALED MOISTURE WITHIN BOTH AIR INDUCTION SYSTEMS AND DETERMINED THAT BOTH ALTERNATE AIR SYSTEMS WERE CAPABLE OF PROPER OPERATION. ADDITIONALLY, UNCONTAMINATED FUEL WAS FOUND WITHIN ALL FOUR FUEL TANKS.
NTSB Probable Cause Narrative
RAM INDUCTION AIR STARVATION OF BOTH ENGINES AND INABILITY OF THE PILOT IN COMMAND TO CLEAR TREES DURING THE FORCED LANDING. FACTORS CONTRIBUTING TO THE ACCIDENT WERE LOW CEILINGS AND TREES.
Event Information
| Type of Event | Accident |
| Event Date | 9/24/1992 |
| Event Day of the Week | Thursday |
| Time of Event | 915 |
| Event Time Zone | Mountain Daylight Time |
| Event City | LOWELL |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83539 |
| Event Date Year | 1992 |
| Event Date Month | 9 |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 834 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 235 |
| Weather Observation Facility ID | S80 |
| Elevation of weather observation facility | 3309 |
| Distance of event from weather observation facility (units?) | 53 |
| Time Zone of the weather observation | MDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 25 |
| Air Temperature at event time (in degrees celsius) | 9 |
| Dew Point at event time (in degress fahrenheit) | 8 |
| Wind Direction (degrees magnetic) | 240 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2975 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Sep 24 1992 12:00AM |
| NTSB Notification Time | 829 |
| Fiche Number and/or location -used to find docket information | 47821 |
| Date of most recent change to record | Dec 11 2000 3:19PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9811L |
| NTSB Number | SEA92LA214 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 320B |
| Aircraft Series Identifier | 320B |
| Aircraft Serial Number | 320B0011 |
| Certified Max Gross Weight | 5200 |
| 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 | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jan 2 2000 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | MCDOUGALL, BUTCH |
| Aircraft Owner Street Address | PO BOX 1384 |
| Aircraft Owner City | POCATELLO |
| Aircraft Owner State | ID |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 83201 |
| Operator is an individual? | -- |
| Operator Name | EHRSTROM, WILLIAM H. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 2145 SOUTH GRANT STREET |
| Operator City | POCATELLO |
| Operator State | ID |
| Operator Country | |
| Operator Zip code | 83204 |
| 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 | -- |
| 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 | No |
| Departure Airport Code | PIH |
| Departure City | POCATELLO |
| Departure State | ID |
| Departure Country | |
| Departure Time | 720 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | S86 |
| Destination City | SANDPOINT |
| Destination State | ID |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| 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 | -- |