RVSM recurrency for part 91

[Kiwi]

My guess is that they were. The US has some unique regulations. For us, when our 1st class medical certificate "expires", it is still valid for operations requiring a 2nd class, then later as a 3rd. In many countries, when the 1st class medical expires it simply is an expired medical certificate, with no provisions that allow it to be used for anything else - hence the rub for some US part 91 operators flying in other countries. When we operate in other counteries, we not only have to follow our regs, but theirs as well.

Sorry LS i don't get it - are you saying that if you operate outside of the US in a US reg aircraft on a US license that you have to follow the licencing rules [medicals] of the country you are operating into?