Important abbreviations
Term / Abbreviation
Altitudes
Indicated Altitude - IA
Density Altitude - DA
True Altitude - TA
Speed
Indicated Airspeed - IAS
Calibrated Airspeed - CAS
Equivalent Airspeed - EAS
True Airspeed - TAS
Ground Speed - GS
Rate of Climb - ROC
Rate of Descent - ROD
Mach Number - Mach
Local Sonic Speed - Fetter TextLSS
Standard Values
Mean Sea Level - MSL
International Standard Atmosphere - ISA
(1013.25 hPA = 1013.25 mbar = 29.92 inch HG)
Standard
Temperature 15° C
Outside Air Temperature - OAT
Course
True Course - TC
True Heading - TH
True Track - TT
True Angle
Wind Correction Angle - L