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WPR12CA072

2011-12-28 · Murrieta, California, United States · None · 1 aircraft · Status: Completed

Current FAA registration · N8641R

Make / Model
SCHWEIZER SGS 1-26B
Year of manufacture
1962 · 49 years old at event
Engine
NONE NONE
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19620706
ADS-B equipped
Yes — Mode-S ABE03E

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The glider's encounter with insufficient atmospheric lift to maintain soaring flight.

Factual narrative

During a solo instructional glider flight, the student pilot released from the tow airplane at a planned altitude of 4,250 feet mean sea level (msl). Upon the release, the pilot was not able to locate any up-currents, and the sink rates the glider encountered varied between 200 to 600 feet per minute. The pilot stated that his plan was to try and gain altitude, cross a ridge, and drop back down into the valley and glide back to the airport. However, there was insufficient lift to clear the ridge safely, so he selected two open fields for a possible off-field landing. The pilot stated that on final approach to the field, he observed some signs between the glider’s current position and the intended landing site that he had not seen during his fly-by inspection. He maneuvered around the obstructions and decided to land on a road, which was his second landing site. The glider landed on the road, and the right wing collided with a previously unseen mailbox post, which caused substantial damage to the wing. The glider spun in a clockwise direction and hit trash cans before coming to rest in a shallow ditch. During a solo instructional glider flight, the student pilot released from the tow airplane at a planned altitude of 4,250 feet mean sea level. Upon the release, the student pilot was not able to locate any up-currents, and the sink rates the glider encountered varied between 200 to 600 feet per minute. The pilot stated that there was insufficient lift to clear the ridge safely and glide back to the airport, so he selected two open fields for a possible off-field landing. The pilot stated that, on final approach to the field, he observed signs between the glider’s current position and the intended landing site that he had not seen during his fly-by inspection. He maneuvered around the obstructions and decided to land on a road. The glider landed on the road, and the right wing collided with a previously unseen mailbox post, which resulted in substantial damage to the wing. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Environmental issues-Conditions/weather/phenomena-(general)-(general)-Effect on operation - C

Verbatim from NTSB's published report. Source file NTSB_2011_WPR12CA072.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.