CO & RVSM
 

Funny exchange I heard last week on MIA center frequency somewhere between St. Croix and West Palm:

MIA: COXXX, due to traffic, I'll need to climb you to FL340 or 380. Which would you like?

COXXX: Um, aren't those kind of odd altitudes?

MIA: You're entering RVSM airspace.

(Silence)

MIA: That's Reduced Vertical Separation Minimum.

COXXX: Uh, we'll take FL340.

I'll bet CO was thankful that MIA didn't ask them whether they were RVSM approved!