Blackhawk
Well-Known Member
I would have thought so too, until I started studying for my IA test and found a question that referenced the 14 CFR part 1 definition of time in service for aircraft.
I don't see that definition anywhere in Part 1.1.
Airliners that I've flown do not have hobbs or tachs (although the engines themselves probably have electronic tach of some sort). Out,off,on and in times are entered in a can. So if you enter information incorrectly in the "can" you are (as Mark pointed out), in danger of violating duty regulations and falsifying aircraft records. The FAA takes a very, very dim view of falsification of any records.