aircraft communality

[tycoon]

to be more precise engines -

I just started one of the real worlds and I was wondering how far does the engine get listed in the same group.

I have some 37- adv with 2 variants on the JT8D - 17 (and 17R) engines,

since they are not availeble on the used market atm I was looking into diferent planes and come to the 727 witch also is powerd by a JT8D-7.

Basicly asking if they will be under the same engine group.

[exchlbg]

No matter what engines you use, the 737 and 727 are not in the same aircraft family.
Additional costs for training/maintenance will apply. Better take another 737 no matter what engines.

[tycoon]

I understand that the airplanes themselves will be in different famelys, but I was wondering more specificly about the engines.

[exchlbg]

Engine commonality is not important.

[tycoon]

Well, i'm screwed then, 1 year+ wait on new 737s and none on the used market atm.

[Aerlingus1916]

Ouch

[schro]

The engines ARE considered common between the 732, DC9 and 727s because they're all JT8D first gen engines. However, from a cost perspective, engine commonality doesn't hurt nearly as much as plane type commonality.

[Sanabas]

Well, i'm screwed then, 1 year+ wait on new 737s and none on the used market atm.

Adding a 3rd fleet group is fine if you need to do it to get planes.

Your 18 year old CV-440s could be a bigger problem than commonality costs are. They cost 30k/month to lease, but 60+k/month in maintenance when you include C-checks. A brand new F27 will cost 60k/month to lease, but only 20k/month in maintenance. They also use 3 staff vs 5, and 20% less fuel. Takes about 8 weeks for a newly ordered one to arrive. And there are 500+ of them available used, even the old ones are significantly cheaper than the convair. 16 year old f27-300 is 31k to lease, 40k to maintain, 17 year old f27-100 is 25k to lease, 45k to maintain. The other 3 similarly sized turboprops available new (DHC-7, HS748, AN24/26) are also cheaper in terms of lease + maintenance, though those 3 are all worse than the f27 thanks to some combination of staff/range/speed/fuel.

[tycoon]

so basicly get rid of the CV 440s....

[Sanabas]

Yep. If you want to use 40-50 seat turboprops, there are much better choices.

[tycoon]

I went with the 440 s because there are plenty of them on the used market, cheap, maintenance not to bad after patching em up again, and good experience with them on the beginners world.

But I also can see your point about using 18-19 Y old planes an rising mainetnance cost on them - so I guess i will slowly phase em out again over the next 2 gameyears (have to make the credits for the new 737 I orderd by june 76 firstbefore i start paying penalties for terminating leases)