operating mode

Atitude Mode (A Mode / Atti Mode )

given operating 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

battlefield operating system (BOS)

buffer and operating-rod group

common operating environment (COE)

contemporary operational environment / contemporary operating environment (COE)

deployment operating base

emergency fleet operating base

forward operating base (FOB)

ground operating equipment

missile operating area

naval base; naval operating base

naval operating base (fixed or temporary)

operating environment (OE)

operating forces

operating forces of the Navy

operating frequency

operating mechanism

operating principle

operating procedures

operating rod assembly

operating rod group

operating speed

operating stocks; working stock

operating tempo (OPTEMPO)

standard operating procedure(s) (SOP)