Operating Costs

[Stebah]

Not coming across as a dick at all lol, I'm open to change. The formula is simple to change. I just want to make sure it's positive change. I'll do some math and see what else I can come up with.

Should the production year have an effect on operating cost as well? As time goes on engineering and manufacturing processes improve and aircraft continue to get more efficient. I mean the 787-8 in theory should be more cost-effective than the 767-300, but with this current formula they are essentially the same to operate (assuming same number of cycles).

Production year certainly has it's effects. The last Boeing 747-8I for Lufthansa for example has a 1% lower operating cost due to several improvements made to later planes. The Boeing 787-8 while more expansive to buy/lease has a 19% fuel reduction, but due to new technologies, different maintenance regime etc the direct operating costs should be several percent lower, this includes the higher monthly cost of leasing etc. If I remember correctly All Nippon Airways claimed the operating costs on the Boeing 787-8 was around 9% lower. 

That is also something that could be accounted for. A paid of Boeing 767 has lower operating costs as you don't have to account for the monthly lease cost or paying for the frame itself (if bought). Not sure how that could be added in formula, but that's how the real world works . Putting this in a formula is really difficult as you have a lot of things to account for. 

I sadly don't have acces to all the details anymore, but I will try and dig some useful stuff up.