°C Degrees Celsius
°F Degrees Fahrenheit
cu.ft Cubic Feet
fpm Feet per Minute
ft Feet
hPa Hectopascal
kg Kilogram
kPa Kilopascal
kt Knot
Ɛ Liter
lb Pound
m Meter
min Minute
psi Pound per Square Inch
psid Pound per Square Inch Differential
psig Pound per Square Inch Gauge
sec Second
AC Alternate Current or Advisory Circular
ACOC Air Cooler Oil Cooler
ACS Air Conditioning System
ADC Air Data Computer
ADF Automatic Direction Finder
ADS Air Data System
ADV Auto Dilution Valve
AFCS Automatic Flight Control System
AFD Auxiliary Flight Display
AFM Airplane Flight Manual
AGB Accessory Gearbox
AGL Above Ground Level
Ah Ampere Hour
AHRS Attitude and Heading Reference System