OK-4006, Kubicek BB30Z, built 2004, 291 flights, 293 hrs. 3.000 m3 / 105.000 ft3. Smart vent. Slight porosity. limited according to MM 7.17.1 (grabtest each 50 hrs/year). Reduced MTOW 850 kg. New velcros fitted 11/2024. ARC valid until 12/2025, can be sold with new ARC.