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As fleet flagship, the ship participated in several exercises, including the multinational UNITAS manoeuvres. In 1963, after the creation of the Servicio de Aviación Naval (Naval Aviation Service), Almirante Grau started operating Bell 47G helicopters from its fantail. The ship was renamed Capitán Quiñones (CL-83) in 1973 after its former name was assigned to the recently acquired HNLMS De Ruyter of the De Zeven Provinciën class. As such it was passed to a reserve status on 6 March 1980 and decommissioned on 2 May of the same year.
Sources
Rodríguez Asti, John, Cruceros. Buques de la Marina de Guerra del Perú desde 1884. Dirección de Intereses Marítimos, 2000.