A handheld transcever (such as ICOM A22) must be licenced, if you have an aircraft radio licence it may be covered by that licence. But IT MUST be listed on that licence.
Having said that, a PPL (with operator and installation licence) is still only licenced to use the equipment (ie the handheld) in the air - and while operating the aircraft on the ground.
To operate an airband radio (station) you must hold a ground station licence and operators certificate/licence.