PNK Russian "ПНК". Aircraft Flight and Navigation system
PrPNK Russian "ПрПНК". Aircraft Targeting, Flight and Navigation System
RAIM Receiver Autonomous Integrity Monitoring
RALT Radar Altitude
RB Radio Bearing
RMI Radio Magnetic Indicator
RPM Revolutions Per Minute
ROF Rate Of Fire
RTB Return To Base
SAI Stand-by Attitude Indicator
SAM Surface-to-Air Missile
STP Steerpoint
TAS True Air Speed
TCA True Track Angle
TH True Heading
TOW Takeoff Weight
TP Target Point
TV Television
TVM Television Monitor
UHF Ultra High Frequency
UTC Coordinated Universal Time
VHF Very High Frequency
VFR Visual Flight Rules
VMU Voice Message Unit
VNAV Vertical Navigation
VOR VHF Omnidirectional Range