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Same A/c, Same Engines, Larger Cost Per Km - Why?  
User currently offlineSonic From Lithuania, joined Jan 2000, 1670 posts, RR: 1
Posted (6 years 5 days 4 hours ago) and read 4417 times:


The SAS in-flight magazine (Scanorama) has details about aircraft of the airlines at least partly owned by SAS (such as Estonian Air, Air Baltic, etc.). Among the information provided there is operational costs. I noticed that cost per seat per kilometer for the same aircraft type and modification and same number of seats and with the same engines differs in different airlines quite much (by as much as 20% if I remeber correctly). Why is it so?

[Edited 2009-01-21 15:04:25]

5 replies: All unread, jump to last
User currently offlineNomadd22 From United States of America, joined Feb 2008, 1904 posts, RR: 0
Reply 1, posted (6 years 5 days 3 hours ago) and read 4396 times:

The length of the flight. How often they refuel, which would affect their average fuel load. How much cargo they carry. Mostly the length of the flight. A plane making 400 mile hops is going to use a lot more fuel per mile than one making 4,000 mile trips.

User currently offlineGreasespot From Canada, joined Apr 2004, 3088 posts, RR: 20
Reply 2, posted (6 years 5 days 2 hours ago) and read 4373 times:

Plus they maybe the same family of engines but different dash numbers.....Like the previous company i worked for and the JT8D's

The b 737-200C could use the -9A, 15, and 17...Same family but not the same performance...

Sorry unknown if that carries on with the CFM56 series..


Sometimes all you can do is look them in the eye and ask " how much did your mom drink when she was pregnant with you?"
User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 3, posted (6 years 5 days 1 hour ago) and read 4356 times:

Operating costs can very by 10% between the same aircraft type operated by the same airline. Operating cost differences of 3 to 5% quite normal . Things like flight controls rigging, leaking door seals, engine status and fuselage smoothness and gaps all effect the operating costs.

User currently offlineSunriseValley From Canada, joined Jul 2004, 5257 posts, RR: 5
Reply 4, posted (5 years 12 months 3 days 3 hours ago) and read 4063 times:

Quoting 474218 (Reply 3):
Things like flight controls rigging, leaking door seals, engine status and fuselage smoothness and gaps all effect the operating costs.

plus there are weight variances between one aircraft and another, of the same model and version.

User currently offlineRivervisual From United States of America, joined Jan 2009, 51 posts, RR: 0
Reply 5, posted (5 years 12 months 3 days 3 hours ago) and read 4056 times:

In addition, you need to consider if the cost per km includes staffing costs. Depending on the labor contracts the same aircraft/engines may have vastly different operating costs.

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