Covers Several Models Of Sealed Lead Acid Batteries The FAA has issued Technical Standard Order, TSO-C173a, Authorization to Concorde Battery Corporation for the RG24-15, RG24-15M, and RG24-16 13.6 Ah family of sealed lead acid batteries. TSO-C173a authorization confirms that the batteries meet the Minimum Operational Performance Standards (MOPS) set forth by the FAA and Radio Technical Commission for Aeronautics (RTCA) in DO-293A.
Source: aero newsFAA Issues TSO Authorization To Concorde Battery For 24 Volt GA Batteries