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David Megginson wrote:

>Thomas B. Passin writes:
>
> > But in fact, if you want to build an aircraft you have to get it
> > certificated (not including home-builts, but you still have to have
> > a lot of paperwork for them), and that costs a lot of money.  That
> > is not really distinguishable from paying to use standards , in a
> > way.
>
>The aircraft type certificate is a specification but not a standard --
>it is not intended to promote interoperability.  Better aviation
>examples might be TERPS, ATA 100, or ATA 2100, which are all
>royalty-free to implement (though you have to pay to obtain copies of
>the ATA specs).
>
>  
>
Of course that is true, but the effect on the aircraft manufacturer and 
the pilots isn't all that different.  I just meant that the de facto 
effect could be considered to be similar.

Cheers,

Tom P



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