Building 6 was the Operations building. All flight operations were controlled from an air conditioned observation room in the control tower of this building, which had windows overlooking the runway and landing mat areas. Signalling, radio sending and receiving equipment, and switches controlling the electric lighting of the runways were operated from this room. Communications, radio and weather reporting offices were located on the second floor, with offices of the operating personnel, aerology department and record department on the first floor. The building was "L" shaped, , containing the reinforced concrete control tower, that was by high. Two small partial basements enclosed pump and heater rooms. There was also a motor driven electric beacon and meteorological instruments.