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Atlas / NTSB / SEA98LA155

NTSB CAROL · Event

Event SEA98LA155

1998-07-03 DOUGLAS, Washington, United States None 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

The pilot's failure to maintain clearance from objects on the ground. Factors include misjudgment of weather conditions (unfavorable winds).

Factual narrative

On July 3, 1998, approximately 1400 Pacific daylight time, a Grob G102 glider, N707NL, registered to and operated by the Boeing Employees Soaring Club, Inc., and being flown by a commercial pilot, incurred substantial damage when one of the aircraft's wingtips struck a pole while landing, approximately 12 miles east of Douglas, Washington. The pilot was uninjured. Visual meteorological conditions prevailed and no flight plan had been filed. The flight, which was personal in nature, was to have been operated under 14CFR91, and originated as a round-robin glider flight from Ephrata, Washington. The pilot stated that the accident occurred while he was making an off-airport landing. He attempted to land next to a road in a plowed field. The terrain was rolling wheat fields, alternately plowed and in use. He stated that he was circling a house, looking for lift when he made the decision to land. He widened his circle and flew north, parallel to the road. There was no indication of high winds, and he didn't have to crab the aircraft to correct his track over the ground. He stated that he turned toward the road and as he passed the mid-point of his turn to the intended final approach, he realized that he was being carried into the power wires on the far side of the road. He was at wire height and in about a 45 degree bank. He didn't think he could get over the wires and didn't want to increase bank angle, so he flew under the wires at about a 30 degree angle to the road. The right wingtip struck the pole, spinning the glider. He said the glider came to a stop, with its tail pointed 180 degrees from the direction of travel in the edge of a wheat field. He noted that within 30 minutes, a thunderstorm came through the area. The pilot stated that the accident occurred while he was making an off-airport landing. He attempted to land next to a road in a plowed field. The terrain was rolling wheat fields, alternately plowed and in use. He stated that he was circling a house, looking for lift, when he made the decision to land. He widened his circle and flew north, parallel to the road. There was no indication of high winds, and he didn't have to crab the aircraft to correct his track over the ground. He stated that he turned toward the road and as he passed the mid-point of his turn to the intended final approach, he realized that he was being carried into the power wires on the far side of the road. He was at wire height and in about a 45 degree bank. He didn't think he could get over the wires and didn't want to increase bank angle, so he flew under the wires at about a 30 degree angle to the road. The right wingtip struck the pole, spinning the glider. He said the glider came to a stop, with its tail pointed 180 degrees from the direction of travel in the edge of a wheat field. He noted that within 30 minutes a thunderstorm came through the area. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1998_SEA98LA155.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (thunderstorm). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗