DAU Aircraft Type Designator for Piper Seminole PA44-180 and Piper Seneca V PA 34-220T Data Acquisition Unit (DAU) for Piper Meridian Piper Part Number 602-250 Meggitt Avionics Inc HW P/N 85-254-1 EX5000 MFD Software Release P/N (Piper) Entegra EMAX Engine Download (what information is stored?) (PA-46-350) Percent Power on a Piper Aircraft