Forward/Reverse (3D mode)

Atitude Mode (A Mode / Atti Mode )

acrobatic mode (ACRO mode)

positioning mode (P Mode)

sport mode (S Mode)

attitude mode (ATTI mode)

RFMD (RF mode, Radio frequency mode)

When you enabled 3D mode in your flight controller, make sure the ESCs are also set up for 3D mode, otherwise the motors might go off with full power

forward observer (FO), forward observation officer; (artillery) observer / spotter

reverse bearing

reverse engineering ( back- wards engineering)

reverse gear

reverse one's field

reverse osmosis (water) purification unit (ROPU / ROWPU)

reverse osmosis unit

reverse slope

reverse slope defense

reverse transit

shipboard reverse osmosis desalinator (SROD)

ditch in reverse

ditching in reverse

idler reverse gear

worm reverse gear

engaging reverse gear

reverse idle thrust

reverse-flow

reverse-flow combustion chamber

reverse flow

reverse pitch of airscrew

reverse thrust noise

reverse the field

reverse tweezers

Resets all motor spin directions, then allows the user to choose which to reverse