Model numbers

[Catans]

I hope anyone can help me.

Looking at the model numbers of aircraft. I know, for example, what the -400 in 747-400 means, but what about the other numbers, as in 747-432. It is those last two numbers I just don't know about.

Anyone...?

Catans

[Pickle14]

They are customer ID numbers, assigned by Boeing.

[twenty eight]

For a full explanation of Boeing Numbering System click HERE (http://www.aerospaceweb.org/question/planes/q0048.shtml).

[Catans]

Thank you very much.