Individually Owned: 150,657
Corporate Owned: 137,281
North Plains Gliderport Airport
Aircraft Accident/Incident Report
North Plains, Oregon 97133
Wednesday, April 14, 1999 15:00 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot-in-command reported that during the currency flight for the second pilot, the second pilot deployed the spoilers and the glider started to descend too soon while on final approach. The PIC stated that he shoved the spoilers closed and looked for the power lines that were near the approach end of the runway. The glider passed over the tops of trees, but did not clear the power lines. The glider collided with the upper power lines which slid up and over the canopy, breaking the Plexiglas over the aft seat. The second pilot was able to maintain pitch and roll in a level attitude as the glider dropped to the ground and landed hard on the main gear. Both pilots reported that they were aware of the power lines at this end of the runway. The PIC stated that he should have reminded the second pilot about the power lines, but didn't. The second pilot stated that he had never landed on this runway before and thought that the power lines were further from the end of the runway. He also thought that he might have been distracted by the tow plane which was landing on the parallel airstrip.
NTSB Probable Cause Narrative
The second pilot did not maintain clearance from power lines. The pilot-in-command did not adequately supervise the second pilot, and the second pilot's diverted attention and lack of familiarity with the geographic area were factors.
Event Information
| Type of Event | Accident |
| Event Date | 4/14/1999 |
| Event Day of the Week | Wednesday |
| Time of Event | 1500 |
| Event Time Zone | Pacific Daylight Time |
| Event City | NORTH PLAINS |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97133 |
| Event Date Year | 1999 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | NORTH PLAINS GLIDERPORT |
| Event Location Nearest Airport ID | 10R4 |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 210 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1453 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 129 |
| Weather Observation Facility ID | HIO |
| Elevation of weather observation facility | 204 |
| Distance of event from weather observation facility (units?) | 10 |
| Time Zone of the weather observation | PDT |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 18 |
| Dew Point at event time (in degress fahrenheit) | 0 |
| Wind Direction (degrees magnetic) | 60 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 14 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 20 |
| Altimeter Setting at event time (in. Hg) | 30 |
| 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 | 1 |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 221 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 14 1999 12:00AM |
| NTSB Notification Time | 1545 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 12 2000 11:30AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N843 |
| NTSB Number | SEA99TA051 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Public Use |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | I.C.A. Brasov |
| Aircraft Model | IS-28B2 |
| Aircraft Series Identifier | IS-28B2 |
| Aircraft Serial Number | 44 |
| Certified Max Gross Weight | 1308 |
| Aircraft Category | Glider |
| 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 | 2 |
| Number of Engines | -- |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 12 1999 12:00AM |
| Airframe hours since last inspection | 1 |
| Airframe Hours | 421 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | DAVID H. WILEY |
| Aircraft Owner Street Address | 13060 S.W. FIELDING RD |
| Aircraft Owner City | LAKE OSWEGO |
| Aircraft Owner State | OR |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 97034 |
| 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 | 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 | Unknown |
| Indicates Domestic or International Flight | Unknown |
| Operator carrying Pax/Cargo/Mail | Unknown |
| Type of Flying (Per_Bus / Primary) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 0 |
| 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 | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 22 2001 3:26PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 9 |
| Runway Length | 2000 |
| Runway Width | 200 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |