NOTE: You must contact AIR-400 at for assistance before using one of these legacy Implementation Procedures for Airworthiness (IPAs) in support of a project, and before contacting an EU Member State's NAA about use and effectivity of these IPAs.

Before the formation of EASA, the FAA had IPAs with seven EU member states. On May 5, 2011 the FAA-EASA Technical Implementation Procedures (TIP) for Airworthiness and Environmental Certification went into effect. The TIP supports the Agreement between the Government of the United States of America and the European Union on Cooperation in the Regulation of Civil Aviation Safety, which was signed in 2008. The TIP supersedes these existing IPAs for everything EASA is responsible for under the EU Basic Regulation. However, these IPAs might be acceptable to use when working with these NAAs for products/parts for which the NAA (not EASA) has regulatory responsibility. Contact AIR-400 (or -420) for additional clarification and support.