Didn't the Army gain possession of the helos because of the lack of RAAF support? If I recall correctly the Army had poor serviceability on take over because the RAAF still controlled the supply of spares and inter service rivalry prevented cooperation, that still the case?
As I understood it, the problem was that many of the RAAF technicians had zero interest in becoming infanteers with spanners so the Army had to do with fewer engineers to try and maintain a fleet more complex than they had been used to.
Train hard, fight easy is a good mantra but fatigue will kill you whether you are at war or not so if you want to avoid doing the enemy's job for him you need rested crews.