Does anyone know what Cost Index/Indices Qantas use for the east coast sectors (BNE-SYD-MEL)? Feel free to personal message me if it's a better option. Ashley Frew.

i would also love to know

A Cost Index of 20 seems to keep me on schedule. I still would like a definitive answer though. Ashley Frew.

Qantas

• B744 CI: 100
• Cost Index 40 for domestic flights
• Cost Index 20 for most International plans, however they may be planned up to CI250 to meet schedule/duty limits
• These figures maybe outdated now. Fuel prices and fiscal meltdown etc

thanks

I know for sure that the Qantas 747-400's are using a standard Cost Index of 50 (internationally and domestically), 767-300's are using a standard Cost Index of 40 (domestically for sure/internationally i'm not sure about) and i'm not 100% sure about the 737-400's but I do know that they hover around the Cost Index 10-ish mark. What I have no idea of however, is the 737-800's Cost Index. I would image that they'd hover around the Cost Index 20-ish mark. My question remains: What Cost Index do Qantas 737-800's use; domestically or internationally? Ashley Frew.

You could always ring someone in Qantas dispach if you wanted an accurate figure. I am sure it is changed on a regular basis due to fuel price ups & downs. Hard to be accurate if you don;t work for them.

Cost index of 12 for virgin blue domestic flights in australia, I dont know of any of their dom or intl flights going over a Cost Index of 25

I'm sure your right Julian. Cheers. Ashley Frew.

Cost index of 12 for virgin blue domestic flights in australia, I dont know of any of their dom or intl flights going over a Cost Index of 25

Cheers mate! That sounds about what most of the airlines are using these days. Well, since the Qantas 737-400 is using a CI of 10, and Virgin Australia are using a CI of 12, then I guess Qantas 737-800's can't be too far off a CI of 10 either. If you don't mind me asking, how old is your information? My info is recent (dare I say, current). Ashley Frew.

as recent as it gets, they have been flying about a 737-800 CI of 12 for the last year, it use to be higher before fuel costs went up. Of course it does slightly vary between routes,east/west and route distance etc etc.

Sweet. Cheers for sharing. I'll go with 12. Ashley Frew.

Hello, sorry for late reply.On a couple of Qantas flight plans I have, it has been 10.Cheers,Rudy

Since the cost index affects climb, cruise and descent performance/economy. Profile speeds may still need to be manually adjusted on descents to meet common ATC expected profiles. It isn't a case of just plug in a 'set and forget' CI figure, this especially for some of the low CI figures quoted above, for sure airlines do not fly these figures on descent.

In Australia, airliners will typically use M0.78 into 280 KT on descent (then 250KT below 10k).