[Anonymous]

That totally depends on what you intend to use it for. Long distance high volume routes, intermediate distance low volume routes. short distance connection flights. How many flights you have a day and where your maintenance centres are

[HAWK21M]

Many factors in play here

Sectors operated

Range of most flights

Availability of trained manpower in Flt ops and Engineering

Availability of spares pooling

Cost of the Aircraft

Powerplant On wing life before heavy maintenance shop visit