Meters vs. Feet
Well, there you have it. Remember the Delhi crash a few years ago when the Ukrainian (I believe) and was it Air India collided in the air. The Ukrainians were reading meters while the other aircraft was reading feet.
I believe on all international flights ICAO demands readings in feet and not in meters. This Delhi incident is not the only time feet and meters have been screwed up causing serious accidents.
When will the former Soviets learn to use SOP procedures and why do they always chat in Russian with ATC when there clearly are other international aircraft around whose pilots have no idea what the Ruskies are blabbing about, especially during critical approaches and take-offs.