I have just been catching up on the tech logs for my R22. We have done 60 hours in the last 10 weeks in a total of 120 flights. This is an average of only 30 mins per flight. Assuming a 5 minute startup/warmup and a 5 minute shutdown/cooling period per flight, that means we have spent 20 hours out of 60 on the ground with the collective down and the Datcon ticking away. So if it was being charged out on the basis of the Datcon that would be a lot of pennies for doing not very much.