do you have any idea about the approximate number of working hours typically needed at such 100 hours check? Just to to get an idea, talking 10 or 100 h?
I know itīs not 100 hrs!
A good mechanic can do a scheduled 100hr B-206 inspection in 10 hrs or less. Itīs usually a day job in a equipped hangar but will probably be less fun to do "au naturel".
Here is a picture of a AB206 that is operated in remote area without mechanic except for 100hr inspections in East-Greenland.