Individually Owned: 150,657
Corporate Owned: 137,281
Ontario Muni Airport
Aircraft Accident/Incident Report
Ontario, Oregon 97914
Thursday, July 15, 2004 8:19 MDT
NTSB Narrative Summary Released at Completion of Accident
The FAR Part 91 instructional flight was the second pilot's third flight in two days in the multi-engine airplane. The second pilot had recently purchased the airplane to pursue a multi-engine rating. Witnesses reported that they observed the airplane traveling toward the airport from the southeast in a level flight attitude. A witness stated the airplane was traveling slowly "as if on a landing procedure." The witness stated that shortly thereafter the airplane appeared to "auger" toward the ground in a left wing low attitude. The witness reported that the airplane made approximately three revolutions before impacting the terrain in a nose low attitude. During the post crash examination of the airframe, it was noted that the emergency hydraulic pump handle was observed in the full aft (extended) position. The accident site was located approximately two miles from the destination airport. Examination of the airframe and both engines revealed no evidence of a pre crash failure or anomaly.
NTSB Probable Cause Narrative
The pilot's failure to maintain airspeed resulting in an aerodynamic stall while maneuvering for an approach to land.
Event Information
| Type of Event | Accident |
| Event Date | 7/15/2004 |
| Event Day of the Week | Thursday |
| Time of Event | 819 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Ontario |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97914 |
| Event Date Year | 2004 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 435910N |
| Event Location Longitude | 1170006W |
| Event Location Airport | ONTARIO MUNI |
| Event Location Nearest Airport ID | ONO |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 2.2 |
| Degrees magnetic from airport | 150 |
| Airport Elevation | 2193 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 753 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 330 |
| Weather Observation Facility ID | KONO |
| Elevation of weather observation facility | 2193 |
| Distance of event from weather observation facility (units?) | 2 |
| Time Zone of the weather observation | MDT |
| 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) | 18 |
| Dew Point at event time (in degress fahrenheit) | 2 |
| Wind Direction (degrees magnetic) | 290 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 3 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 2991 |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 17820 |
| NTSB Notification Source | FAA-ROC |
| NTSB Notification Date | Jul 15 2004 12:00AM |
| NTSB Notification Time | 803 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 8 2005 12:51PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Boise, Idaho |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4439P |
| NTSB Number | SEA04FA133 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Piper |
| Aircraft Model | PA-23-160 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 23-1956 |
| Certified Max Gross Weight | 3800 |
| 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 | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Jack L. Knudsen |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Seal Rock |
| Aircraft Owner State | OR |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 97376 |
| 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) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | BOI |
| Departure City | BOISE |
| Departure State | ID |
| Departure Country | USA |
| Departure Time | 730 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ONO |
| Destination City | ONTARIO |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Apr 6 2005 2:24AM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |