My feeling is yes, but don't quote me on that. On the other hand, if I were you, I'd go for the certified one anyway. G5 is a very versatile and convenient instrument, and it offers tremendous value for the money. In particular, the kit with the magnetometer (GMU11) will give you not only an AI, but also a slaved compass; you can either switch between the AI and DG/HSI presentations, or just use the compass scale on the AI. There are certain mode limitations prescribed for the certified usage, but nothing will physically preclude you from switching a certified instrument into any mode you want - everything is easily programmable from the front panel.