shredder111,
Put it this way, you could use it if you wanted to. But would you want to risk losing your plane over it? Since you are on the same frequency that cars use, if somebody is on your channel turns on their car you will lose control of your aircraft. That's why there are separate frequencies for aircraft and ground vehicles (72 Mhz for air and 75 Mhz for ground). Do yourself a huge favor and get a new radio on the proper frequency for aircraft.

Ken