Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
South Prairie, Washington 98385
Tuesady, March 25, 2003 9:45 PST
NTSB Narrative Summary Released at Completion of Accident
The pilot /owner of the unregistered experimental homebuilt SNS-8 aircraft took the aircraft out on its first flight following maintenance work. The pilot reported that the airspeed indicator was inaccurate. After departing the private airstrip, and about 1,300 feet above ground, he attempted to level the wings out of a left turn, but the aircraft continued rolling inverted and the pilot reported that it entered into a spin, which he recovered from after roughly two rotations. The pilot then elected to execute an immediate landing in a nearby field. During his approach, he intentionally slowed the aircraft to stall speed. The aircraft impacted the ground and immediately nosed over. An FAA inspector examined the aircraft and found no malfunction with its flight controls. He also reported finding a leak in the aircraft's pitot static system.
NTSB Probable Cause Narrative
The failure of the pilot to maintain control of the aircraft during the crosswind turn resulting in an inadvertent spin entry, followed by his intentional stall to a landing resulting in a hard landing and subsequent nose over.
Event Information
| Type of Event | Accident |
| Event Date | 3/25/2003 |
| Event Day of the Week | Tuesday |
| Time of Event | 945 |
| Event Time Zone | Pacific Standard Time |
| Event City | South Prairie |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98385 |
| Event Date Year | 2003 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 470824N |
| Event Location Longitude | 1220614W |
| 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 | Weather Observation Facility |
| Time of the weather observation | 955 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 251 |
| Weather Observation Facility ID | TCM |
| Elevation of weather observation facility | 323 |
| Distance of event from weather observation facility (units?) | 16 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 12000 |
| Lowest Non-Ceiling Height | 2500 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 10 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | 170 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 6 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.09 |
| 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) | 14496 |
| NTSB Notification Source | SEA FAA ROC |
| NTSB Notification Date | Mar 25 2003 12:00AM |
| NTSB Notification Time | 1020 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Nov 25 2003 11:36AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Renton FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | NONE |
| NTSB Number | SEA03LA050 |
| 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 | Hiperlight |
| Aircraft Model | SNS-8 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 46 |
| Certified Max Gross Weight | 550 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | Yes |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | Kirk, Donald J. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Enumclaw |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98022 |
| 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 | No |
| Departure Airport Code | 02WA |
| Departure City | South Prairie |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 930 |
| Departure Time Zone | -- |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | -- |
| Destination State | -- |
| Destination Country | -- |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Sep 26 2003 10:22AM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |