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Anybody know how aircraft repair costs are worked out? I know it's based on service rating, or appears to be but AV support and AF size also play a part. I also know the supply costs are only applied at the instance it goes from maintenance to ready.

Chris21wen wrote: Tue May 26, 2026 4:31 pm Anybody know how aircraft repair costs are worked out? I know it's based on service rating, or appears to be but AV support and AF size also play a part. I also know the supply costs are only applied at the instance it goes from maintenance to ready.

Time to Repair:
SR dictates the span of days of repair. AV support and AF size influence the number of days to repair.* These facts we know. We also know that there are ranges and probabilities in both of these and that they are random in nature.


Cost to Repair
The number of days is very likely part of the cost equation. I would also hazard a guess that the number of engines is also part of the equation. But both of these are WAGs. I don't recall the devs ever talking about this. I'll try to get some time to search this, but unless a dev were to poke his nose in here (not likely), I don't think we will ever get closure here without a LOT of testing.


* For both variables, they need to be at their required level OR there will be a malus attached in terms of days to repair. Not aware that any bonus is given when there is a surfeit of either one. But again, that would require testing to verify.

Of note is also the state of the base hosting the A/C. If facilities are damaged, repairs are much more difficult.

Something tells me that there is also the very typical GG spice added to the mix - Random.

dr.hal wrote: Tue May 26, 2026 9:30 pm Of note is also the state of the base hosting the A/C. If facilities are damaged, repairs are much more difficult.

Definitely. If the air base is damaged, then it won't meet the size requirement, and you get the malus on all operations including repairs.

zebrazwo wrote: Tue May 26, 2026 9:59 pm Something tells me that there is also the very typical GG spice added to the mix - Random.

Again, definitely. I identified portions above.

"We also know that there are ranges and probabilities in both of these and that they are random in nature."

I've been testing again and found this out but it was only a very limited test. Done undamaged AF, one Iwo Jima (level 2) and Midway (level 4) both with 1K supply and an AV unit with just 24 AV. Nothing else.

The supply cost is only paid the instance the aircraft goes from maintenance to ready. It can spend any number of day in maintenance and cost nothing to go there.

The cost to repair is based on service rating, which is not surprising but AF size does sometimes seem to reduce cost, but minusculely, unless it's was a random thing?. The amount of AV is irrelevant all that does is lengthen the time in maintenance.

1SR - 2
2SR G4M1 Betty - 10, Ki-32 Mary - 10, P-39D Aircobra - 10
3SR H81-A3 -30, D0-24K-1 -30
4SR H6K4 Mavis -68, B-17D Fortress -65

Chris21wen wrote: Wed May 27, 2026 9:37 am I've been testing again and found this out but it was only a very limited test. Done undamaged AF, one Iwo Jima (level 2) and Midway (level 4) both with 1K supply and an AV unit with just 24 AV. Nothing else.

The supply cost is only paid the instance the aircraft goes from maintenance to ready. It can spend any number of day in maintenance and cost nothing to go there.

The cost to repair is based on service rating, which is not surprising but AF size does sometimes seem to reduce cost, but minusculely, unless it's was a random thing?. The amount of AV is irrelevant all that does is lengthen the time in maintenance.

1SR - 2
2SR G4M1 Betty - 10, Ki-32 Mary - 10, P-39D Aircobra - 10
3SR H81-A3 -30, D0-24K-1 -30
4SR H6K4 Mavis -68, B-17D Fortress -65

Chris,

Interesting. What values for days to repair, damage, and fatigue did the aircraft start with?

Presumably the aircraft go into repair without gassing up and loading ammo. Is it possible the supply usage on leaving maintenance is just getting the aircraft ready for ops?

PaxMondo wrote: Wed May 27, 2026 12:29 pm

Chris21wen wrote: Wed May 27, 2026 9:37 am I've been testing again and found this out but it was only a very limited test. Done undamaged AF, one Iwo Jima (level 2) and Midway (level 4) both with 1K supply and an AV unit with just 24 AV. Nothing else.

The supply cost is only paid the instance the aircraft goes from maintenance to ready. It can spend any number of day in maintenance and cost nothing to go there.

The cost to repair is based on service rating, which is not surprising but AF size does sometimes seem to reduce cost, but minusculely, unless it's was a random thing?. The amount of AV is irrelevant all that does is lengthen the time in maintenance.

1SR - 2
2SR G4M1 Betty - 10, Ki-32 Mary - 10, P-39D Aircobra - 10
3SR H81-A3 -30, D0-24K-1 -30
4SR H6K4 Mavis -68, B-17D Fortress -65

Chris,

Interesting. What values for days to repair, damage, and fatigue did the aircraft start with?

These were all done at scenario start, so no combat. Groups only had a few aircraft 1 mostly but some with 5 but all set to damaged. Estimated time to repair ranged from 1 day to 4 which more or less coincided with 1e -4e. The mavis here is 4 days.
All had no missions set, most set to train or rest as Mavis so the supply use has got nothing to do with arming etc.

It's simple to set up but you do need to be isolated with no supply coming in, hence island

Ran the above again. Start 7 dec on the 11th dec the Mavis repaired the base now having only 928 supply and the request supply jumped from 24 to 92
The AV unit consumes 1 supply per day so with nothing happening I expect the base to have 996 SP on the 11th. The difference is 68 and the only thing that happened was the mavis repaired.

I should point out that I don't have any problem with this happening, it's the knowing that matters.

Chris,

I would want to use more data which you can get off of the "PLANES" screen.


From the group screen here, choose PLANES at the bottom:

Now you can the specific Damage and Fatigue along with the Estimated Repair.
Can you show this for your Mavis Test case? Thank you!

All at Iwo on 7 Dec/8 Dec. Don't ask why the Mavis only has i damage, test before had it as 4 Random thing probably. Iwo had 1000 sup on 7 on 8th dec it had 890.

Chris21wen wrote: Sat May 30, 2026 6:53 am Screenshot 2026-05-30 074303.pngScreenshot 2026-05-30 074613.png

Screenshot 2026-05-30 074339.pngScreenshot 2026-05-30 074649.png

All at Iwo on 7 Dec/8 Dec. Don't ask why the Mavis only has i damage, test before had it as 4 Random thing probably. Iwo had 1000 sup on 7 on 8th dec it had 890.

Chris,

In my testing that I did long ago on this, what I discovered is that from the editor, damaged aircraft always appear with 1 damage, 0 fatigue and we have no way to edit this. In the end, this issue forced me to give up on testing this aspect because it was a pain to create the testbed. Since you couldn't do it directly from the editor, you have to create it "in game" and then you can only load the savegame. variants are laborious to create, and you need them to examine all the variables. In the end, I just said "done" and moved on.