The best part of this program is that it has all features needed to run an efficient business, like tracking orders/invoices or inventory control in real time (no need anymore for excel sheets).
I also appreciate its ease when managing customer data; you can easily create new customers profiles with their personal information without having any problems afterwards. Also easy customization options are available so there's no problem if your needs change later down the road! It would be great however some minor changes could help improve user experience such as adding more fields at once instead just one by 1 making things harder than they should have been initially but still manageable. If you want something simple yet powerful then ProgAv will surely fit perfectly into what ever type of aviation industry you're working within since everything from order entry through invoicing works flawlessly together - even better because most other programs.