Jonker Sailplanes (Pty) Ltd JS1-C — registry & accident history
Compiled from FAA & NTSB records · as of Jul 18, 2026
There are 12 Jonker Sailplanes (Pty) Ltd JS1-C airframes on record (built 2012–2017), 8 currently registered. 4 have one or more NTSB accident records (4 records total, 2 with a fatal highest-injury classification). Data as of Jul 18, 2026.
Recent Jonker Sailplanes (Pty) Ltd JS1-C accidents
The pilot’s failure to maintain sufficient airspeed of the glider, which resulted in exceedance of the glider's critical angle of attack and an aerodynamic stall/spin.
The pilot’s inability to maintain altitude and his delayed decision to deploy the powered-glider’s engine, which necessitated an off-airport landing.
The pilot's failure to maintain aircraft control in gusting wind conditions while on final approach to the runway.
The pilot’s loss of glider control and its subsequent impact with terrain for reasons that could not be determined due to a lack of available information.