A Technical Standard Order (TSO) is a minimum performance standard for specified materials, parts and appliances used on civil aircraft. When a company is authorised to manufacture a material, part or appliance to a TSO standard, this is referred to as TSO authorisation. When a company receives a TSO authorisation, it is assured that the product meets these minimums in both design and production. Bose Corporation meets all, and exceeds many, TSO requirements. Receiving a TSO authorisation is not an approval to install and use the authorised article in the aircraft.