Not sure if its at all possible but find it an incredible feat testing if the audio is working for alerts to my headphones. I have a Bose headset with bluetooth connectivity but find it really hard to know if they are paired up with the iPad correctly and not to the iPhone.....I know some iPads or tablets are connected with a lead as well into the intercom system. It would just be very nice if there was a tab you could click in a menu somewhere that would either put a short test tone up or message saying all was well. 
I know you can go into the menu of the ipad and play an audio track but its so long winded.
Thanks

I now realise that there is an advantage of being based at an airfield inside a restricted area - a hassle free audio check!