Commonality Question

[joecuro]

So I've got a fleet of 6 AN-140s that are making me a decent profit (for what they are) and I was looking to add another (larger) fleet type.  If I add another type of aircraft, will my commonality for the Antonovs stay the same as it is now and just add another type, or will the cost of the Antonovs also go up with the new type?

Thanks.

[ArcherII]

Will go up with a new type added. The general consensus is that is better to have 10 planes of the same fleet before adding a 2nd type.