Going by the published stats, it can recieve the air bands, but not transmit on them. Aircraft bands are in the 120's-130's mhz, and the lowest the yaesu can do is 144mhz for transmitting. I doubt you're going to find any amateur rigs that do so, you may need to go with a dedicated aircraft transciever if you need to transmit on them. Also, the amateur liscenses don't cover the aircraft bands either, so you need to get a different liscense for that as well and I really don't know which one you would need for that situation.
Now, if it can be modified to do that or not..... you got me, i havnen't got a clue. But not out of the box, thats for sure.
My oil line fix
My 100k stopped odometer fix
Brace for impact, I'm in a "modifying mood". Massive thread count inbound.