Air2GXS, you're right. Collins English Dictionary does have "certificate" as a Tr. verb, meaning "to authorize by or present with an official document." It's the third of 3 meanings for certificate, and its an old French usage from the middle ages. I did say it was probably in a dictionary -- but I thought it would be a modern vernacular usage, not old French.
Certify is by far the more common usage, and there is no example of "certificate" as a verb where certify doesn't work better, is simpler, has fewer letters -- all that stuff.
SPREE34 -- sorry, but you certify airmen, and mechanics, and all manner of certifiable folks. Whether you fly jets or farm chickens, you get certified.
One final note -- why in god's name would you say certificated when certified does the trick. The other one that drives me nuts is endorsation instead of endorsement. Where is Shakespeare when we need him.
Having gone through all that, I do believe I'm now certifiable. My wife has thought so for years.
Never let the facts get in the way of a good story.