Folks,
This thread started out as a question about recording "engine" time, mostly recently it has become a slanging match about flying school billing.
So, just a quick summary --- if you are doing business with a flying school or someone who hires aircraft, caveat emptor, particularly the fine print, INCLUDING insurance --- before you get a very nasty twist of the hip pocket nerve. And they do have to make a buck to stay in business.
As to times to be logged as Flight Time and Air Time, the regulatory requirement is clear, and not subject to "opinion".
As a final comment, "customers" are not always paragons of virtue, an old mate of mine, and I am certain he is not the only one, had to fit his aircraft with hidden time recorders, air switch activated, after he found more than one instance of tachos /VDO/Hobbs being disconnected by customers.
Tootle pip!!