Maintenance and Modifications
FAA Rules That TC and STC Holders Cannot Limit ICAs

The FAA has issued a policy statement that prevents type certificate and supplemental type certificate design approval holders (DAHs) from “inappropriately” restricting the availability, distribution and use of instructions for continued airworthiness (ICA). ICA constitute only those maintenance instructions recommended by a DAH in compliance with airworthiness standards that are acceptable to or approved by the FAA to maintain a type-certified product in an airworthy condition.