From the Aeroprakt factory:
Dear Aeroprakt aircraft owners,
We have encountered a problem with the durability of the windshields on the A22 and A32 aircraft. Until the beginning of 2022, we installed 2 mm thick PETG glass and 3 mm thick acrylic glass on the above-mentioned models, the material of which turned out to be short-lived and sensitive to cracking, which led to three cases of windshield failure this year, which fortunately did not lead to fatal consequences. In the coming days, we will issue a safety bulletin, where we will describe the need for mandatory replacement of windshields and the serial numbers of the aircraft affected by this bulletin. Vne will be temporarily limited to 140 km/h (75 knots) until the windshield is replaced.
Aircraft with a production date after January 22, on which windshields made of the new material are installed and on which the windshield was replaced after this date, do not have such problems and the speed limit does not apply to them.
For our part, we will try to provide our dealers with new windshields as soon as possible.
Best regards,
Aeroprakt team