Airline Mogul Forum

Airline Mogul => Game Strategy => Topic started by: TheKevinShow on August 23, 2010, 03:29:41 am

Title: Maintenance and when to retire planes
Post by: TheKevinShow on August 23, 2010, 03:29:41 am
I currently own five planes: two Beriev BE-32KMs, two ATR 72-200s and a Dornier 228-202. Right now, they are costing me 1,081,823 in maintenance per month. How can I determine which planes are costing me the most maintenance fees, and when is a good time to take them out of service?

Also, do planes that don't fly any routes accrue any maintenance fees?
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on August 23, 2010, 04:21:39 am
I currently own five planes: two Beriev BE-32KMs, two ATR 72-200s and a Dornier 228-202. Right now, they are costing me 1,081,823 in maintenance per month. How can I determine which planes are costing me the most maintenance fees, and when is a good time to take them out of service?
The older the plane, the more expensive it will be in maintenance.

The more expensive the plane, the more expensive it will be in maintenance.

Using an F-100 out of ORD, JFK, LHR, CDG, or FRA, I can get 900k to 1.1M DOC on the first one or two planes. There is zero need to replace that plane ever. However, a 130M wide-body that can only accrue 300-400k DOC from three routes will need to be replaced every few game years.

Quote
Also, do planes that don't fly any routes accrue any maintenance fees?
Yes. They accrue the same maintenance costs as one that flies 23h59m per day. That is the reasoning behind the cycles/hours stats in hopes to provide a more accurate rate of maintenance in the future.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on August 23, 2010, 04:46:35 am
Here are my planes. My DOC is 1,134,231. Where should I go from here?

Boeing 737-400 - 1:18 - Leased In - €347,907 - Age: 0.2 - Hours: 1.30 - Value: €63,274,905 (I just put in a broker request for a brand new 737 so this info will be moot within 6-7 RL days)
ATR 72-200 - 0:20 - In Service - €344,356 - Age: 0.2 - Hours: 0.34 - Value: €12,489,107
ATR 72-200 - 0:36 - In Service - €223,666 - Age: 0.1 - Hours: 0.60 - Value: €11,584,836
Beriev Be-32KM - 1:47 - In Service - €61,407 - Age: 0.9 - Hours: 1.79 - Value: €2,979,954
Beriev Be-32KM - 2:06 - In Service - €61,149 - Age: 0.9 - Hours: 2.10 - Value: €1,434,304
Dornier 228-202 - 0:36 - In Service - €95,743 - Age: 2.5 - Hours: 0.60 - Value: €1,032,415
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on August 23, 2010, 12:20:41 pm
Fill this out first...

http://stephenm.org/smfforum/index.php?topic=10272.0
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on August 23, 2010, 06:25:13 pm
Whoops. I forgot about that.

Airline ID: 43971
World ID: Public #1609
Current world year: 1995
Current bases: San Diego International
DOC: € 1,156,998
Title: Re: Maintenance and when to retire planes
Post by: Royal First Fleet on August 25, 2010, 02:50:27 pm
I have a question related to this.

When you have old planes for sale (either on open market or privatly), do you still pay the full maintance costs?

Ron Overdijk (NL) aka Royal First Airlines
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on August 25, 2010, 05:16:10 pm
When you have old planes for sale (either on open market or privatly), do you still pay the full maintance costs?

Yes. As long as the plane is in your possession, you will pay maintenance for it. It's often better to just scrap old planes rather than wait for someone to buy it on the open market.
Title: Re: Maintenance and when to retire planes
Post by: Royal First Fleet on August 25, 2010, 06:32:25 pm
Thanks for the quick reply. I got several retired B707`s & DC-8`s on sale in a private world and maintanance going through the roof. So probalbly start scrapping them if no buyers show up anytime soon. (PW452)
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on August 28, 2010, 03:00:39 am
Back on this subject, I've got two ATR 72-200s being delivered via brokerage. They're going to replace my two least profitable Berievs.

7237     Beriev Be-32KM     PW PT6A-65B         1     0:13     Online     1718     4991     €75,827
7207     Beriev Be-32KM     PW PT6A-65B         1     0:26     Online     3199     7348     €84,300

Obviously, the Berievs are far too new to scrap. I can still make money off of them even when I'm not using them. Should I sell them or lease them, and at what price?
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on September 07, 2010, 04:57:11 am
Ok, so after playing for a while since posting this thread, I've gotten rid of the Berievs and the Dornier. I now fly 23 ATR 72-200s (with four on order) 2 737-400s and I've got a 767-200ER on order.

Three of the ATRs are a year or older, as is one of the 737s. When is a good age to retire/replace those planes?
Title: Re: Maintenance and when to retire planes
Post by: 1993matias on September 07, 2010, 08:16:35 am
As a rule of thumb, replace small a/c every 7,5 years, small jets (the size of a 737) every 3-4 years, and the big ones once a year.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on September 07, 2010, 08:19:46 am
Ok, so I've still got a ways to go, then.
Title: Re: Maintenance and when to retire planes
Post by: Virgin Serbia on September 09, 2010, 03:28:02 pm
Do the number of engines affect maintenance costs?
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on September 09, 2010, 03:30:40 pm
No. Only price.
Title: Re: Maintenance and when to retire planes
Post by: 1993matias on September 09, 2010, 04:29:40 pm
But price influences the maintenance, so cheaper = less maintenance. But the difference in price is usually so little that you don't notice it.
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on September 09, 2010, 04:56:09 pm
But the difference in price is usually so little that you don't notice it.

Incorrect. Maintenance costs increase exponentially with age, which will, in turn, affect more expensive planes quicker.
Title: Re: Maintenance and when to retire planes
Post by: 1993matias on September 09, 2010, 06:35:12 pm
But the maintenance price is calculated out of the cost of the plane, isn't it?
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on September 09, 2010, 06:43:39 pm
But the maintenance price is calculated out of the cost of the plane, isn't it?

Yes it is, but it is then also multiplied by an exponential factor that involves age.

Thus, maintenance costs for more expensive planes increase much faster than inexpensive planes.
Title: Re: Maintenance and when to retire planes
Post by: 1993matias on September 09, 2010, 07:26:45 pm
Well, I'm partly right then ;)
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on September 29, 2010, 11:45:35 pm
Ok, you guys said that big birds should be retired once a year (which really doesn't make sense - the maintenance formulae need to be fixed ASAP). Do 767-200ERs count as big birds? I've got several that are over 1 year old.
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on September 30, 2010, 06:19:18 am
The answer, like most of the kind of questions asked in this forum, is: it depends. How much money per month is it making? If the answer is high, then you may not have to replace it for 7-10 years.  If the answer is low, then you will need to replace it often. Therein also lies the second dilemma: have you made enough money with the plane so that when you sell it, can you recoup the remaining costs? This is especially important to consider in private worlds where planes are essentially useless on the aircraft market.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on September 30, 2010, 06:27:31 am
All of my 200ERs make at least 133K per IG day.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on October 07, 2010, 06:44:01 pm
All of my 200ERs make at least 133K per IG day.
Bump. Is this enough to keep them around?
Title: Re: Maintenance and when to retire planes
Post by: Virgin Serbia on October 07, 2010, 07:16:01 pm
All of my 200ERs make at least 133K per IG day.
Bump. Is this enough to keep them around?

That is not a lot. Get rid of your 767s. If anything, try some of the longest range 757-200s. I always make at least 200000 pr day, and at the moment all but one are over 250000.

How are you utilising the 767s? Are they operating full frequencies, or just 0.5s? 2x 0.5 to 2 destinations makes far more money than 1 full to 1 destination. Also avoid any ultra long routes. 5000 nm at most. Use 757s if possible.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on October 07, 2010, 08:12:06 pm
I'm based in North America, and all of them are 2 x 0.5 to overseas/South America, and some of them fly additional short routes from their destinations via alliance routes/my base in Dublin.
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on October 07, 2010, 08:15:58 pm
(http://img.photobucket.com/albums/v189/RXTEWMU/8440d3ea.gif)

You know, this would be a lot easier to figure out if the game had individual maintenance costs for each plane.
Title: Re: Maintenance and when to retire planes
Post by: Virgin Serbia on October 07, 2010, 09:06:54 pm
I'd close the transpacific routes. They don't earn enough considering how many hours they take up. Focus on a lot of East coast - Europe flights with 767s to the biggest airports, and 757s to the smaller ones. Only Sao Paulo is big enough to justify a 767, the rest of the South American destinations are 757 only. 

Title: Re: Maintenance and when to retire planes
Post by: Mastafa on October 07, 2010, 09:15:45 pm
I'd close the transpacific routes. They don't earn enough considering how many hours they take up. Focus on a lot of East coast - Europe flights with 767s to the biggest airports, and 757s to the smaller ones. Only Sao Paulo is big enough to justify a 767, the rest of the South American destinations are 757 only. 


Agree
Title: Re: Maintenance and when to retire planes
Post by: TheKevinShow on October 07, 2010, 11:25:25 pm
I feel like I'd be losing out because the East Coast-Europe routes are a lot more populated, whereas the Transpacific routes are relatively empty.

What I'm really wondering is how old a 767-200ER has to be to warrant replacement if they're making that much money.
Title: Re: Maintenance and when to retire planes
Post by: Virgin Serbia on October 08, 2010, 06:14:09 am
I feel like I'd be losing out because the East Coast-Europe routes are a lot more populated, whereas the Transpacific routes are relatively empty.

What I'm really wondering is how old a 767-200ER has to be to warrant replacement if they're making that much money.

It should be payed off after 1.5 years at most. And for the east coast routes, use A310-300 or A330-200s. They are much cheaper in maint.

Nobody is flying transpacific because they can't make money on them.
Title: Re: Maintenance and when to retire planes
Post by: pseudoswede on October 08, 2010, 02:20:18 pm
At 133k with a B762ER, he recoups only about 10% of the cost after 17 months, and he'll start losing money in the 18th month.