No its not, they've been giving letters out that say bla bla bla we'll give you a job pending the outcome of your technical interview, your sim, your wonderlic and IFR test results, and your drug test. Basically it means the HR person liked you enough not to turn you down right on the spot. From the people that I interviewed with half got a letter and half that did get that letter didn't get the job. And we had quite a few ppl at my interview... 12 or 14 maybe?

So don't feel like you got the job, just because they gave you the "conditional" letter.