328th independent Transport Aviation Squadron: No data exists about this squadron aside from it being based out of Sokol-Dolinsk). I include it here for scenario designers who might want to add transports to a Far East battle.
For speculative information only. I have been looking for a while to pin down the rough composition of these independent Transport Aviation Squadrons (OVTAE) and as well the Independent Mixed Aviation Regiments (OSAP) however there does not seem to be a standard.
Their role seems to be providing transport to various levels of the air force (both PVO & VVS):
1x OSAP per air Army
1x OVTAE per air Corps (or smaller armies)
They seem to have multiple types in each unit, Squadrons with ~8-20 Aircraft and Regts with 30-40 aircraft. Usually aircraft type have at least 2, probably to cover for maintenance.
They always seem to have a mix between passenger and cargo and usually a mix of fixed wing and helicopter.
That's all I've got on these so if you have more, please share.