I haven't a clue what RL maintenance costs look like. Just noticed that even on new planes here, the yearly maintenance rivalled the yearly lease cost. So just going to go through some new planes, see how yearly maintenance on a brand new plane compares to price. 1 year of maintenance (including c-check) = 128.6 A-checks. So just going to put that yearly maintenance as a % of new price. Just a guide, given how price is somewhat dynamic over the course of a game.
AN-140: 7.20% (or 4.83% with PW engines.)
ATR 72-200: 2.95%
So, obviously correlates quite a bit to overall price. An-140 is a bit of an outlier, it costs more in total to maintain than an a320.
The 9 seat PC costs a little over half what an a320 does to maintain. Is that realistic?
And some DOTM numbers, planes are obviously much cheaper, but maintenance is too. More cheap to buy, expensive to run Russian stuff also.
L1011-500: 2.66% (costs more than concorde in $ terms)
DC 10-30: 2.28% (also more than concorde)
TU-144: just ended. I was contemplating flying these, and waiting for the warning to appear before deciding. I somehow missed it.
732: 3.59% (2.41% for most expensive layout)
An-26: 20.91% (costs more than an a300)
PA 31-310: 29.2% (costs more than a DHC-7, and maintaining 3 of these 8 seaters will cost you almost the same as maintaining a pair of a300s.)
PA 42: 12.8%
AN-28: 14.38% (cheaper than all the PA31 types, surprisingly)
Metro-II: 5.67% (2nd cheapest of all in game, I think)
EMB-110: 5.76% (tiny bit cheaper than the metros)
Again, purchase price scales up a lot faster than maintenance costs, making the bigger planes much cheaper to maintain. But again, even for the cheapest of them, 3 E110s = more than a single a300. 3 of the expensive Pipers = 1 747. that seems weird to me, but I may be wrong.