Abbreviations and Acronyms

· AC - alternating current

· ACP - audio control panel

· alt - alternate

· altn - alternate

· app - approach

· ARINC - Aeronautical Radio, Inc.

· BITE - built-in test equipment

· BL - buttock line

· CAPT - captain

· DC - direct current

· DEU - display electronics unit

· DME - distance measurement equipment

· EFIS - electronic flight instrument system

· F/O - first officer

· FCC - flight control computer

· FDAU - flight data acquisition unit

· FMC - flight management computer

· freq - frequency

· fwd - forward

· grd - ground

· ILS - instrument landing system

· LCD - liquid crystal display

· LED - light emitting diode

· LRU - line replaceable unit

· maint - maintenance

· MHz - megahertz

· MMR - multi-mode receiver

· MKR - marker beacon

· NAV - navigation

· NCD - no computed data

· ND - navigation display

· norm - normal

· PFD - primary flight display