· ADI - attitude direction indication
· AID - aircraft installed delay
· altm - altimeter
· ant - antenna
· approx - approximately
· ARINC - Aeronautical Radio, Inc.
· BITE - built-in test equipment
· CAPT - captain
· CDS - common display system
· conn - connector
· CP - control panel
· CW - continuous wave
· DEU - display electronics unit
· DH - decision height
· DME - distance measuring equipment
· DU - display unit
· EFIS - electronic flight instrument system
· F - frequency
· FCC - flight control computer
· FDAU - flight data acquisition unit
· FM - frequency modulation
· F/O - first officer
· freq - frequency
· fwd - forward
· gnd - ground
· GPWC - ground proximity warning computer
· ILS - instrument landing system
· LCD - liquid crystal display
· LED - light emitting diode
· LRU - line replaceable unit
· maint - maintenance
· MDA - minimum descent altitude
· mins - minimums
· PFD - primary flight display
· P/N - part number
· RA - radio altimeter
· RA - radio altitude
· rec - receiver
· RF - radio frequency
· rst - reset
· R/T - receiver transmitter
· S/W - software
· sys - system
· T - time
· TCAS - traffic alert and collision avoidance system
· VCO - voltage controlled oscillator
· WXR - weather radar
· xmit - transmit