This advisory circular (AC) provides information about the provision of technical assistance to Civil Aviation Authorities (CAA) related to compliance with International Civil Aviation Organization (ICAO) standards and recommended practices. The AC explains the process the Federal Aviation Administration (FAA) uses to provide assistance to CAAs and also provides guidance CAAs can use to obtain technical assistance from commercial providers if the services of the FAA are not available.

Title 14 CFR part 43 prescribes the rules governing the performance of maintenance, reventive maintenance, and alterations of aircraft having a U.S. airworthiness certificate.

On April 19, 1995, the FAA amended Title 14 of the Code of Federal Regulations (14 CFR) part 187 (60 Federal Register (FR) 19628-01, April 19, 1995, Fees for Certification Services and Approvals Performed Outside the United States), which established the methodology for determining these charges.