An air management system of an aircraft for supplying pressurized air to at least one air consumer, the air management system comprising: - at least one air consumer; - at least one air source; - at least one gas turbine engine having a single port (2.1) located at a low-intermediate compressor stage of the gas turbine engine; - an air bleed system in fluid communication with the at least one gas turbine engine via the single port (2.1) of the gas turbine engine, the air bleed system being configured to supply compressed air to the at least one air consumer; - at least one electrical compressor in fluid communication with the air source, the at least one electrical compressor being configured to supply compressed air to the at least one air consumer; and - a control unit configured to receive an input relative to the aircraft operation condition and selectively operate the air bleed system and/or the at least one electrical compressor based on the received input, wherein: the aircraft operation condition is a pre-determined flight altitude and/or the flight phase among the following: taxiing, take-off, climb, cruise, descent, holding, and landing, the control unit is configured to selectively operate the air bleed system and/or the at least one electrical compressor according to the received input, so that: - in taxiing, the at least one electrical compressor supplies compressed air to at least one air consumer; - in taking-off, the at least one electrical compressor supplies compressed air to at least one air consumer; - in climbing, the at least one electrical compressor supplies compressed air to at least one air consumer up to the pre-determined flight altitude, being the pre-determined altitude preferably 15000 ft. (4572 m); then, the air bleed system supplies compressed air to the at least one air consumer; - in cruise, the air bleed system supplies compressed air to at least one air consumer; and - in descending, holding, and landing, the at least one electrical compressor supplies compressed air to at least one air consumer. - at least one air consumer; - at least one air source; - at least one gas turbine engine having a single port (2.1) located at a low-intermediate compressor stage of the gas turbine engine; - an air bleed system in fluid communication with the at least one gas turbine engine via the single port (2.1) of the gas turbine engine, the air bleed system being configured to supply compressed air to the at least one air consumer; - at least one electrical compressor in fluid communication with the air source, the at least one electrical compressor being configured to supply compressed air to the at least one air consumer; and - a control unit configured to receive an input relative to the aircraft operation condition and selectively operate the air bleed system and/or the at least one electrical compressor based on the received input, the aircraft operation condition is a pre-determined flight altitude and/or the flight phase among the following: taxiing, take-off, climb, cruise, descent, holding, and landing, the control unit is configured to selectively operate the air bleed system and/or the at least one electrical compressor according to the received input, so that: - in taxiing, the at least one electrical compressor supplies compressed air to at least one air consumer; - in taking-off, the at least one electrical compressor supplies compressed air to at least one air consumer; - in climbing, the at least one electrical compressor supplies compressed air to at least one air consumer up to the pre-determined flight altitude, being the pre-determined altitude preferably 15000 ft. (4572 m); then, the air bleed system supplies compressed air to the at least one air consumer; - in cruise, the air bleed system supplies compressed air to at least one air consumer; and - in descending, holding, and landing, the at least one electrical compressor supplies compressed air to at least one air consumer. - in taxiing, the at least one electrical compressor supplies compressed air to at least one air consumer; - in taking-off, the at least one electrical compressor supplies compressed air to at least one air consumer; - in climbing, the at least one electrical compressor supplies compressed air to at least one air consumer up to the pre-determined flight altitude, being the pre-determined altitude preferably 15000 ft. (4572 m); then, the air bleed system supplies compressed air to the at least one air consumer; - in cruise, the air bleed system supplies compressed air to at least one air consumer; and - in descending, holding, and landing, the at least one electrical compressor supplies compressed air to at least one air consumer.