On 27/01/2010, at 12:44, DMcD <[email protected]> wrote:

I don't have any firm answer to this problem,

I do.

If a company is no longer interested in supporting their ancient products, they should publish the complete drawings and technical data under a copyright license which permits owners to manufacture their own spare parts.

Doing so would be unlikely to expose any trade secrets because the products are so old. It wouldn't enable their competitors to use the designs against them either because to do so would expose them to copyright infringement lawsuits.

But it'd allow legitimate owners of aircraft to continue to maintain them forever, knowing that any spares they built themselves would be equivalent to original, certified components.

Downsides? I can't see any.

   - mark
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