OS
I presume your mob uses QNH rather than QFE in Russia or anywhere that uses QFE. We used QNH in the USAF, which combined with inches only altimeters created a godawful number of conversion any one of which could kill. In my present jet (Canadian built), we can convert to metric altimetry with feet also shown. This makes QFE a dream, once OFE ops are taught and briefed. I just went in/out of ULLI with a new F/O and he had no problem understanding it.
Why do airlines stick with QNH in QFE regions?
GF