Line maintenance (A+B)?

[LotusAirways]

Hi,
How is this calculated? Nothing on the manual or forum...

LA

[Infinity]

How is what calculated? You have to be a little more specific.

[LotusAirways]

Chose any flying aircraft, scroll down, financial estimate, below sold tickets: Line maintenance (A+B)

[LotusAirways]

A & B checks get referred to as "line maintenance".
C & D checks get referred to as "heavy maintenance".

Thank you Sanabas!