10:10:07,6 Navigator: RV, settings. RV.
10:10:10,6 PIC: 100 meters,
The confussion in some translations comes from transition from cyrylic to latin or taking Polish acronyms RW and then placing them in English translations.
P - Russian 'R' as in Radio
B - Russian 'V' as in Vysota (altitude)
The official transcript correctly translates it into Polish as RW (Radio Wysokosc) (Radio Altitude)
Anyway. the Tu-154 radio altimeter is (Russian spelling) RB5 with translations into English designating it as RV5 instead of RA5. (Complete mess with letters as you see - 5 different people can use 5 acronyms).