WHBM

Aviation in the west has for some time used knots, feet, etc, but in Soviet (and their allies) aviation they did not do so. All the classic Tupolevs etc measured speeds in km/h rather than knots, while air traffic control used altitude in metres, typically in 1,000m increments, so 10,000m which is 32,800 feet would be a common assigned altitude. Aircraft crossing the boundary would need to make an adjustment to the new height. Airbus on the A320 were (I believe) the first to have instruments which were switchable to show either/both of the scales - until then crews would have ready reckoner type sheets in front of them to make the conversion between radio instruction and their instruments. The reverse was required, of course, for Soviet aircraft operating to the west.

However, in recent times the various eastern countries have actually changed over to use knots, ATC heights in feet, etc. Part of this is the withdrawl of Soviet aircraft types, replacing them with Boeings etc. It's a notable reversal of metrication.

BotB

The cheek...definitely have to get jnr. Peter to get us access to your new abode with the intent to do some crosswind redecorating!

Hope everyone gets where they are going safely, nothing to add to KARFA's excellent coverage (and others) ^

PETER01

Jnr PETER01 is under strict instructions not to communicate with any FTrs