PMA — Permanent Magnetic Alternator
POS LT — Position light
PRESS — Pressure
PSI — Pounds per square inch
PTT — Press to Test
PWR — Power
QTY — Quantity
R/FUEL — Right fuel
RECP — Receptacle
RLY — Relay
RPM — Revolutions per minute
RTR — Rotor
s/w Ver — Soft ware version
SEL — Sound exposure level
SHP — Shaft horsepower
SL — Sea level
SPKR — Speaker
Sq — Square
SYS — System
T/R — Tail rotor
TCA — Transport Canada Aviation
TEMP — Temperature
TRQ — Torque
VFR — Visual flight rules
VHF — Very high frequency
VNE — Never exceed velocity
VOR — VHF omnidirectional range
WL — Water line
WARN — Warning
XFR — Transfer