Both parties signed a declaration of cooperation, under which the two agencies agreed to share ideas, information, skills and techniques.
They will also partner on AAM projects and challenges of mutual interest.
FAA acting administrator Billy Nolen said: “The FAA and the JCAB have enjoyed a long and strong working relationship, and that will extend into this new era of aviation.
“Close collaboration with our international partners is critical to successfully and safely integrating these new technologies.”
The new declaration further boosts the relationship between the two agencies.
In addition, it formalises the talks on certifying and validating new AAM aircraft production, operations, airworthiness along with personnel licensing.
The move follows the FAA’s alliances with the UK, Canada, Australia and New Zealand in the National Aviation Authorities Network to harmonise certification criteria and integration plans.
Last month, FAA unveiled new design guidelines for vertiports infrastructure to support AAM aircraft, which take off and land vertically and are electrically driven.
The new guidelines will offer crucial initial information for airport owners, operators, and infrastructure developers to start developing facilities to facilitate the operations of AAM aircraft.
With vertical takeoff and landing (VTOL) capabilities, AAM aircraft has the capability to move passengers or cargo at lower altitudes in rural, urban and suburban areas.
FAA said that the new design standards include important data, which has to be followed by designers and builders in order to facilitate safe take-offs and landings of AAM aircraft.