What is required for the installation of an item manufactured under the Technical Standard Order system?

The requirement for the installation of an item manufactured under the Technical Standard Order (TSO) system is that no further approval is necessary for installation. This is because items produced under TSO are already deemed to meet specific safety and performance standards established by aviation regulatory authorities, such as the Federal Aviation Administration (FAA). When an item is TSO-approved, it indicates that the product has been rigorously evaluated and meets all relevant criteria before its installation.

This streamlined process reflects the confidence stakeholders have in TSO-approved items, allowing for greater efficiency in their installation without needing additional approvals. While there may still be best practices for installation procedures and guidelines to follow, the core aspect of the TSO process is that the initial approval serves as a mark of quality, negating the need for repeated scrutiny before installation.