Airline Mogul Forum

Airline Mogul => General Chat => Topic started by: dorea42 on August 28, 2009, 02:49:11 am

Title: Daily maintenance shot up to 50m, from 21m!!
Post by: dorea42 on August 28, 2009, 02:49:11 am
Hello all, I am currently playing in private world #510 "ninervictor", airline ID #11489

I had 12x A340-300 delivered to me recently.


Before the new month, I noted down my MX to be €21,714,420. However, after the game cycled to month of June 1996, my MX shot up to €50,654,569

I also did scrapped about 6 to 7, 8 years old A320 before the new month.

My fleet as follow:

BEFORE:

Airbus A310-300     40
Airbus A320-200    162 (5 on order)
Airbus A340-200    9
BAC Concorde 0 (1 on order)

AFTER:

Airbus A310-300     40
Airbus A320-200    162 (5 on order)
Airbus A340-200    9
Airbus A340-300    12 (2 on order)
BAC Concorde 0 (1 on order)

---

Any idea what's wrong guys? BUG maybe?
I really doubt that 12 new planes can cause the MX to shoot up by about €29m!
Beside, A340-200 and A340-300 are '1 family'
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: dktc on August 28, 2009, 03:12:26 am
Expensive, large aircrafts have higher maintenance. Your 12 new aircrafts are all A340-300's
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: pseudoswede on August 28, 2009, 03:51:16 am
Yup, calculations look right.

As repeated over and over again in these forums, planes over 200M are not worth buying.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: dorea42 on August 28, 2009, 03:54:31 am
I am aware that larger aircrafts have higher maintenance, but I was totally caught off guard when MX shot up by approx 29m!

Reason? When I introduced my A340-200, my MX didn't increase by much. Infact, 21m is all needed for my 342 + 310 + 320..

If I get rid of all my remaining 342, will the MX fee drop back to 20+m?
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: dorea42 on September 04, 2009, 05:00:00 pm
I checked with my friends who played this game..

and he has much larger fleet of big planes compared to me. Guess what? His MX had a drastic drop - more than 2x.

Weird isn't it?
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: pseudoswede on September 04, 2009, 05:54:12 pm
I am aware that larger aircrafts have higher maintenance, but I was totally caught off guard when MX shot up by approx 29m!

Reason? When I introduced my A340-200, my MX didn't increase by much. Infact, 21m is all needed for my 342 + 310 + 320..

If I get rid of all my remaining 342, will the MX fee drop back to 20+m?

If you got rid of all of your A340s and your Concorde, you might be closer to 25-30M.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: dorea42 on September 05, 2009, 08:21:46 am
I am aware that larger aircrafts have higher maintenance, but I was totally caught off guard when MX shot up by approx 29m!

Reason? When I introduced my A340-200, my MX didn't increase by much. Infact, 21m is all needed for my 342 + 310 + 320..

If I get rid of all my remaining 342, will the MX fee drop back to 20+m?

If you got rid of all of your A340s and your Concorde, you might be closer to 25-30M.

So what large jets can I get then?

I still find it ridiculous because I checked with my friend, the world creator, and his mx is only about 36mil daily.

My fleet now:

Aerospatiale-BAC Concorde   1   (1)
Airbus A310-300   42   (1)
Airbus A320-200   163   (3)
Airbus A340-300   15   (2)

MX cost daily: €50,495,977 - Note that the huge jump already happened even before I have the concorde.

My friend's fleet:

Airbus A300-600R   1   (0)
Airbus A310-200   35   (0)
Airbus A310-300   32   (0)
Airbus A320-200   174   (0)
Airbus A330-300 LR   58   (0)
Boeing 757-200   1   (0)
Boeing 777-200   32   (0)
McDonnell Douglas MD-11   19   (0)
Boeing 777-200ER 0     (25)


MX cost daily: about €36+ mil

-----

Note: I did not post this thread in "BUG" forum because I believe this may just be a glitch that just need to be rectified, and not a bug, as yet..
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: pseudoswede on September 05, 2009, 02:40:38 pm
Please post the actual numbers on the 1st of the month on the Finance Report (http://www.airlinemogul.com/manual/index.php/Finance) page for both of you.

You also never stated the average age of your (or your friend's) fleet.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: phat01 on September 05, 2009, 11:32:24 pm
i know the answer is probably yes, but does the maintenance go up as you planes get older? i have seen it slowly creeping up my oldest planes are 3 years old.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: CHR on September 06, 2009, 12:35:37 am
Yes, maintenance goes up as your planes get older. 3 years is an alright age for planes, however much older than that and it becomes cheaper to buy a new plane. I would be thinking about replacing those older planes soon. If your friend has significantly younger planes (especially if the big/expensive planes are younger), they would likely have a considerably lower maintenance.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: dorea42 on September 18, 2009, 05:44:53 pm
Somehow I can't get into this forum for quite a long while.. kept getting "page cannot be displayed" message..

anyway, when the comparison was made, his fleet age is definitely older than my 343.. my 343 was just about "fresh from factory".

anyway another player in my world, SJY, told me that his mx dropped drastically from 28+mil to 13+mil. It just happened, and after delivery of 772ER


PS: When I posted the comparison, my average fleet age was 3.0... now my average fleet age is 3.9
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: hansgalaxy on September 18, 2009, 05:54:53 pm
Hi, I would like to bring the attention to the admin about this weird problem that just occured to me and my friend in the above mentioned Private world.

Current Fleet as of now.

Aerospatiale-BAC Concorde   2   (0)
Airbus A310-300   35   (5)
Airbus A319   20   (0)
Airbus A320-200   55   (0)
Airbus A321-200   25   (10)
Airbus A340-200   15   (0)
Boeing 737-200 Adv. HGW   1   (0)
Boeing 767-300ER   3   (0)
Boeing 777-200ER   15   (2)

Maintenance (Yesterday)
Daily Maintenance Costs: € 28,132,760

Maintenance (Today)
Daily Maintenance Costs: € 13,303,809
 <<<<<  :o

Aircraft Statistics
Average fleet age: 1.6 years

What i did before the drop?
I put up 3x 763ER for sale.
1x 772ER and 3x A310-300 Delivered.

There should be an increase in MX i supposed? Since the 3x 763ER is not sold yet, i am still paying for the MX.
It make no sense for it to have a sudden drop, while dorea42 has a sudden increase.
Something is seriously wrong here.

I hope the admins will take a closer look at the problem?  ;)
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: ATE24 on September 19, 2009, 10:49:03 am
I've problem on the maintenance as well...

In the past year I've been replacing all those 5 year old aircrafts and reducing the average age from over 3 year to 2.1 year right now. But I realize that no matter how I replace the aircraft the maintenance continues to increase. I really see no reasons on this issue, could anyone explain it to me?
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: kcclieou on September 19, 2009, 04:01:36 pm
My maintenance cost is hitting me hard. I had not been expanding my fleet over the past year and instead focused on scrapping old airplanes and replacing them with new ones of the same model, though this was not something I did every single month. It turns out that the aircraft maintenance cost increases LINEARLY irrespective of the number and types of airplanes I scrap over the previous game month. This appears to be pretty weird since, at the beginning stages of the game, I noticed that the maintenance cost of each single airplane increased linearly. I would sort of suspect that the script for the calculation of maintenance expenses is recursive in nature, rather than adding up the cost of each individual airplane at the start of every month - am I correct?
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: StephenM on September 19, 2009, 04:43:05 pm
I would sort of suspect that the script for the calculation of maintenance expenses is recursive in nature, rather than adding up the cost of each individual airplane at the start of every month - am I correct?

The formula is based off aircraft values, however all inputs in the formula are summed together prior to being handled. As a result if maintenance costs were calculated per plane individually, and the maintenance cost was summed at the end, the result is not the same as what the formula currently does. The current approach allows for much faster processing time however, when scaled across 3-400 worlds it does the job fairly effectively.

The formula isn't perfect, but I cannot really comment on a case by case basis unless I start pulling data on each persons fleet and number crunch it that way.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: im359 on September 19, 2009, 05:18:53 pm
1/6/2005 Monthly Maintenance Fees €0 €1,228,527,972
1/7/2005 Monthly Maintenance Fees €0 €460,898,270

That's what really happen in my private world (with ATE24 and kcclieou actually 8)).
I just kept on replacing my old planes, but suddenly the value dropped like London Bridge.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: ATE24 on September 19, 2009, 05:21:55 pm
1/6/2005 Monthly Maintenance Fees €0 €1,228,527,972
1/7/2005 Monthly Maintenance Fees €0 €460,898,270

That's what really happen in my private world (with ATE24 and kcclieou actually 8)).
I just kept on replacing my old planes, but suddenly the value dropped like London Bridge.
OK that's enough man, you are getting on my and kcclieou's nerve... ???

We are not that happy to know you got rid of 60% maint. :(
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: Dooskie III on September 20, 2009, 01:55:03 pm
1/6/2005 Monthly Maintenance Fees €0 €1,228,527,972
1/7/2005 Monthly Maintenance Fees €0 €460,898,270

That's what really happen in my private world (with ATE24 and kcclieou actually 8)).
I just kept on replacing my old planes, but suddenly the value dropped like London Bridge.
OK that's enough man, you are getting on my and kcclieou's nerve... ???

We are not that happy to know you got rid of 60% maint. :(
You only have one nerve?
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: kcclieou on September 26, 2009, 03:52:57 pm
The formula isn't perfect, but I cannot really comment on a case by case basis unless I start pulling data on each persons fleet and number crunch it that way.

Okay, so I will present a real example here.

(http://i542.photobucket.com/albums/gg422/s065239/am_maint.png)

I own a fleet of 297 aircraft, including 11 A330-200's, 17 B767-200ER's, 18 A321-100's, 39 A320-200's, 110 A319's, 28 A319LR's, 7 B777-200 ER VIP's, 26 E170's and 37 E190's. Some of the aircraft (especially the A320 series and the widebodies) are on average quite new, as I commenced plans to replace old aircraft over the past game year.

In particular, the following aircraft were scrapped and replaced in the past few months, mostly between the 19th and 20th of the month concerned:

Jul 2006: 3 A319's, 3 A320's, 4 A321's
Aug 2006: 9 A319's, 2 A320's
Sep 2006: 9 A319's
Oct 2006: none
Nov 2006: none

Yet my maintenance cost increases steadily over these months, apparently independent of the number of aircrafts replaced over the previous month. (I mean, the fact that maintenance expenses are on the rise is not itself a problem; the pace of the increase vis-a-vis aircraft replacement is THE problem.) This appears to be quite strange.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: hansgalaxy on September 28, 2009, 02:39:57 am
It seems that not only one person that is affected.
Perhaps there's something wrong with the MX formula.
Really hope to hear something from Admins   ???
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: ATE24 on September 30, 2009, 07:28:00 am
I've found something really interesting... (after an inspiration by im359)

As a usual (but both useless and hopeless) routine on the aircraft replacement, I bought 5 A319-131 as well as 2 A320-232 2 days ago.
And today the new shiny aircrafts arrived :D, so I started my work (again).

Before I scrapped 7 old planes half an hour ago, I loaded the statistic page of A319:
(http://gallery.hkbdc.info/d/5529-2/AM_before.png) (http://gallery.hkbdc.info/d/5528-1/AM_before.png)
Yes, the guy that holds 130 A319s is me. And the page keeps opening over the last 30 minutes.

Then I scrapped them before the end of that day:
(http://gallery.hkbdc.info/d/5535-2/AM_scraprecord.png) (http://gallery.hkbdc.info/d/5534-1/AM_scraprecord.png)
Pretty a lot.
*Ar btw, Google Chrome DOES perform better than Firefox when I need to re-open a lot of routes, I strongly suggest it to you guys.

Afterward im359 told me at MSN that he found a lot of planes are holding by Nobody Company, then I checked the statistic page of A319 again:
(http://gallery.hkbdc.info/d/5532-2/AM_after.png) (http://gallery.hkbdc.info/d/5531-1/AM_after.png)
I hold 125 A319s now, correct.

But the problem is, why Nobody Company gets 5 more A319s?
Didn't the scrapped aircrafts disappear immediately?

Altogether I scrapped 71 A319s over the past 2 years, if they all went to Nobody Company, then I really "contributed" a lot to it.
I wonder if the situation worsens my maintenance... ^-^
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: StephenM on September 30, 2009, 09:03:21 am
Something might have got messed up with the exclusion of the brokers from rankings. I'll take a look into that issue.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: im359 on October 01, 2009, 06:06:40 am
Something might have got messed up with the exclusion of the brokers from rankings. I'll take a look into that issue.
why the plane not just simply destory, if there is not broker in the world?
Or, if the world has no broker, the maint of those planes will be paid by players??? :-\
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: StephenM on October 01, 2009, 10:11:50 am
why the plane not just simply destory, if there is not broker in the world?
Or, if the world has no broker, the maint of those planes will be paid by players??? :-\

A certain percentage already get destroyed instead of going to a broker. If there is no broker then the planes are destroyed.
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: D-ABTH on October 19, 2009, 06:38:08 pm
why the plane not just simply destory, if there is not broker in the world?
Or, if the world has no broker, the maint of those planes will be paid by players??? :-\

A certain percentage already get destroyed instead of going to a broker. If there is no broker then the planes are destroyed.

Stephen, this is also happening in the world I'm in (PW 882) with phantom entities holding supposedly scrapped aircraft in the Aircraft Rankings.

BTW, on the maintenance issue: if and when you consider revamping that script, is there a way to provide a discount if you're operating fleets with interchangeable engines? E.g. someone operating A319/320/321 all with CFM engines should have lower maintenance costs than someone who has a mixed fleet with IAE and CFM engines. Likewise, crew costs should be lower for someone who operates aircraft with common type rating (e.g. 757/767 or A330/340) as compared to someone who operates unrelated types of aircraft. Just an idea...
Title: Re: Daily maintenance shot up to 50m, from 21m!!
Post by: StephenM on October 19, 2009, 09:10:53 pm
BTW, on the maintenance issue: if and when you consider revamping that script, is there a way to provide a discount if you're operating fleets with interchangeable engines? E.g. someone operating A319/320/321 all with CFM engines should have lower maintenance costs than someone who has a mixed fleet with IAE and CFM engines. Likewise, crew costs should be lower for someone who operates aircraft with common type rating (e.g. 757/767 or A330/340) as compared to someone who operates unrelated types of aircraft. Just an idea...

With regard to maintenance, there were allocations put in for commonality in the new formula based on aircraft type and manufacturer. At the time there was no back end setup for aircraft "families" however this wouldn't be impossible.

The engine families are however a different story, engines in AM are very primitive in terms of their function and role. It would take a good bit of work in order to overhaul the engines and create a full engine "system". One of the benefits of this however could be the ability to re-engine aircraft, replace engines, etc. It would allow for greater flexibility such as with maintenance commonality and greater statistical information. Changing the way engines function in AM is not a near priority however.