Select an Aviation Term: -- Choose a Term -- IAS (Indicated Airspeed) CAS (Calibrated Airspeed) EAS (Equivalent Airspeed) TAS (True Airspeed) GS (Ground Speed) Mach Number Pressure Altitude True Altitude AGL (Above Ground Level) MSL (Mean Sea Level) Flight Envelope Coffin Corner Ailerons Elevator Rudder Flaps Slats Spoilers Speed Brakes Trim Yoke Sidestick N1 N2 EGT EPR Thrust Reverser Bleed Air Compressor Stall Flameout Spool-Up Time Gate Hold Pushback Turnaround Block Time Block Out Block In Hub Airport Focus City Code Share Load Sheet Weight and Balance Operational Control Revenue Passenger Non-Revenue Passenger Jumpseat ILS Localizer Glideslope CAT I CAT II CAT III RNAV Approach RNP Approach LPV Approach Visual Approach Missed Approach FAF (Final Approach Fix) PAPI VASI REIL MALSR Centerline Lights Touchdown Zone Lights Threshold Lights Runway Edge Lights Taxiway Centerline Lights Stop Bar Lights Class A Airspace Class B Airspace Class C Airspace Class D Airspace Class E Airspace Class G Airspace MOA TFR Restricted Area Prohibited Area ADIZ Emergency Descent Ditching Rejected Takeoff (RTO) Engine Failure Bird Strike Hydraulic Failure Electrical Failure Fuel Emergency Cabin Depressurization Evacuation ADS-B CPDLC ACARS Electronic Flight Bag (EFB) Synthetic Vision Head-Up Display (HUD) Enhanced Vision System (EVS) Autoland Autothrottle Dew Point Altimeter Setting QNH QFE QNE Convective Activity Cumulonimbus (CB) Virga Jet Stream Frontal System Freezing Level Wake Turbulence V1 VR V2 Positive Rate Gear Up Approaching Minimums Minimums Retard Spoilers Deployed 80 Knots 100 Knots Tail Number Registration Hex Code Callsign Livery Position Report Track Log ACARS Message Dispatch Route Route String Oceanic Clearance Slot Time Aspect Ratio Induced Drag Parasite Drag Ground Effect Mach Tuck Dutch Roll GNSS VOR (VHF Omnidirectional Range) DME (Distance Measuring Equipment) Waypoints IRS (Inertial Reference System) CRM (Crew Resource Management) Hypoxia Spatial Disorientation Sterile Cockpit Rule Fuselage Empennage Monocoque Nacelle Winglet FADEC APU (Auxiliary Power Unit) RAT (Ram Air Turbine) GCU (Generator Control Unit) PTU (Power Transfer Unit) PACK (Air Conditioning Kit) Stall Angle of Attack (AOA) Vortices Dihedral Anhedral Mach Buffet Boundary Layer TCAS RA (Resolution Advisory) TA (Traffic Advisory) RVSM Separation Squawk Code Ident Function Microburst Wind Shear CAT (Clear Air Turbulence) METAR Report TAF Forecast SIGMET Advisory FMS (Flight Management System) MCP (Mode Control Panel) CDU (Control Display Unit) PFD (Primary Flight Display) ND (Navigation Display) EICAS Screen ETOPS Limits Vmo Limit Speed Mmo Limit Mach Vne Never Exceed MEL List CDL List