Maintenance and Modifications
Concorde Battery gets new TSO
The FAA has approved eight valve-regulated sealed lead acid batteries
under Technical Standard Order C173 for Concorde Battery.

The TSO-ap

The FAA has approved eight valve-regulated sealed lead acid batteries
under Technical Standard Order C173 for Concorde Battery.

The TSO-approved models are Concorde’s RG-121 Series and RG-122 Series, emergency batteries for lighting, standby, avionics, fadec and backup power. Parts conforming to TSO C173 are approved for design and production.

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