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ALEXANDER SCHLEICHER GMBH & CO ASW 27-18 accident at Sterling, MA, 15 Jul 2021

Sterling, MA, United States

On July 15, 2021, an ALEXANDER SCHLEICHER GMBH & CO ASW 27-18 was involved in an aviation accident near Sterling, MA. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to maintain the glider’s stability in the roll axis during the takeoff roll, which resulted in a dragged wingtip and ground loop. This summary draws on records from NTSB; 9 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

Probable cause

The pilot’s failure to maintain the glider’s stability in the roll axis during the takeoff roll, which resulted in a dragged wingtip and ground loop.

— NTSB Determination

Contributing factors

Lateral/bank control — Not attained/maintainedPilot

Related events

Same aircraft family

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