I will be replacing my Garmin GNS 530 WASS unit next month for upgrade and am putting out feelers for anyone in the club that may be interested prior to me listing outright. It is fully operational with no defects and will include a brand new tray and connectors. It is the 14/28 volt unit and I will have all the original service manuals as well. It is currently installed in my F33A and I use it regularly for IFR approaches. I plan on having it available by late March if all works out.