The preferred embodiments relate to power engineering and can be used for locating faults in overhead power transmission lines. A method for locating faults in overhead power transmission lines includes installing, on a lightning-protector cable or power conductor, an apparatus for locating faults in overhead power transmission lines, controlling the movement of the apparatus, controlling the operation of apparatuses for inspecting the overhead power transmission lines, and receiving, processing and analyzing data produced by those apparatuses. Furthermore, the placement and control of the movement of the fault-locating apparatus are carried out with the aid of a helicopter-type aircraft. The apparatus for locating faults in overhead power transmission lines comprises a control system, apparatuses for inspecting the overhead power transmission lines, and a drive system, wherein the apparatus additionally comprises a helicopter-type aircraft.