Concorde Battery Corp. has received Technical Standard Order C173 (TSO-C173) authorization for eight additional aircraft batteries. TSO'd part numbers are turbine engine starting and emergency power VRLA-AGM recombinant gas batteries RG-47, RG-49, RG-206, RG-350, RG-355, RG-500, RG-600-1, and RG-600-2. TSO authorization allows the battery to be installed in any aircraft by showing that the requirements of the particular aircraft model are met by the TSO battery. End users can install a TSO authorized battery without the need of a PMA specifying their aircraft model number. Airframe manufacturers seeking Type Certification and STC applicants will save time and certification costs by selecting a battery that has already met FAA TSO-C173, which incorporates RTCA/DO-293 requirements. For more information visit or email

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