Canopy opened during takeoff, Lydd Airport, Kent, 29 July 2016.
The pilot was intending to fly to Germany before continuing to Poland, where she was due to participate in an aerobatics championship. Almost immediately after getting airborne she realised that the canopy was locked in an intermediate, partially open position that she often used to enhance cockpit ventilation whilst taxiing.
The pilot recalled reaching up to the canopy handle with the intention of holding it closed but in doing so, the canopy opened. The aircraft descended and bounced heavily on the runway before becoming airborne again.