сертифікат експлуатанта
air traffic control operator
Air Defense Command Commendation Certificate
aircraft airworthiness certificate
certificate or waiver of authorization
control tower operator
early warning system (EWS) operator
identification operator
operator control unit (OCU)
operator maintenance
operator’s pack
operator's permit
ship operator
telephone operator
volunteer certificate
radio telephone operator (RTO)
handover certificate
aiming rule operator
azimuth (deflection) display board operator
control post operator
vertical control operator
fire-control operator
acceptance certificate
crew member certificate
issue a certificate
navigator-radio operator
certificate holder
certificate of compliance
certificate of quality
certificate of revaccination
certificate of safety for flight
certificate of type
certificate of vaccination