A330 ETOPS reference Weight

[HalalPork]

Hey folks,
I just want to ask if somebody has an idea how to calculate the ETOPS reference Weight. Which graphs to use and so on, I need the exact number for the A330-243 Trent 772B.
Thanks

[zonnair]

210000kg. is a given number.

[shortfuel]

Given number? Really? I doubt it...


Aircraft reference weight is calculated in order to determine diversion speed schedule and max diversion distance.
This data is relevant for a particular given operator/route structure.

If your airline went through an ETOPS approval, somebody in the Navigation/Performance dept. (or A330 Tech Manager...?) should be able to help you.

Out of curiosity, why do you need to know it?

[compressor stall]

There is no standard weight for an airframe.

An airline will determine a weight that best suits them given the various factors and variations possible.

I suggest you log on to airbusworld and download the Getting to Grips with ETOPS book. Slightly out of date (unless recently updated, I haven't checked) but the principles by and large are the same.

[vineet.mk]

Its generally a safe wt. The airline planning should identify such that the ETP wt will always be below this wt.

[HalalPork]

Hey folks,

thanks for the replies. I thought that it is 210t as well, but after reading all the related books including GTG I figured out that the answer to such a question is simply that the company has to calculate it for each route accordingly. Further it says 'It is the weight of an airplane which takes of with maximum structural weight from MSL and flies for one hour'. So if it would be 210t and the max structural weight is 233t it means this aircraft burned 23t of fuel within 1 hour. Holy moly...thats quite some burn off i guess.

Happy landings