Alice
something for plane navigation a system allowing to go in fog.
The 101 cockpit
Full size
Photos: Tupolev Tu-154M Aircraft Pictures | Airliners.net
Russian Tu cockpit:
full size:
Photos: Tupolev Tu-154M Aircraft Pictures | Airliners.net
There are two unidentified (for me) elements near AH and HDI...
But they are also on the 101 cockpit, so I actually can't see much "removed".
During my ground school our instructor was showing us original technical manuals of
the Tu-154, also the cockpit lay out from the original a/c as delivered 1990.
What was characteristic were two ADF displays, identical near each other.
At the same ground school, our navigation teacher, former AF major
also explained us how this two ADF were used in standard military procedures,
as well as older airline procedures to do an approach on two NDBs.
Maybe this is the "approach procedure" the Russian forum is referring to.
You still have two NDBs on many Polish military and civil airfields.
This particular Tu certainly didn't have the ADF configuration as described above.