RVSM (reduced vertical separation minima – 1000′ vertical separation) has been in operation on the North Atlantic tracks for years. European airspace became RVSM at the beginning of last year and helps us immeasurable by allowing us to fly much closer to the aircrafts optimum level for its current weight (amongst other benefits). It exists between FL290 and FL410.

By the way there is only 1 western jet whose systems are not capable of being upgraded to RVSM standards and yes, it’s the 146!!!