This advisory circular (AC) provides guidelines that industry may use to develop and revise the minimum scheduled tasking/interval requirements for derivative or newly type certificated (TC) aircraft and powerplants for Federal Aviation Administration (FAA) approval. This AC refers to these minimum scheduled tasking/interval requirements as the Maintenance Review Board Report (MRBR), the Maintenance Type Board Report (MTBR), or the Original Equipment Manufacturer (OEM)/Type Certificate Holder (TCH) Recommended Maintenance Procedures. After FAA approval, the requirements become a basis upon which operators develop their own individual maintenance programs. The report will become a dynamic report for each OEM/TCH (i.e., a document subject to periodic revision based on new or changed analysis or requirements)

Purpose: This InFO serves to remind Directors of Operations and Chief Pilots of Title 14 of the Code of Federal Regulations (14 CFR) Part 121 and Part 135 air carriers/operators certified under 14 CFR Part 119 of the regulatory requirement to provide adequate numbers of flight instructors and check pilots/check flight engineers (FE) to conduct required flight training and checks.

This rule better aligns FAA regulations regarding the North Atlantic (NAT) Minimum Navigation Performance Specifications (MNPS) with the relevant International Civil Aviation Organization (ICAO) standards. The ICAO NAT Region is transitioning from the decades-old MNPS navigation specification to a more modern, Performance-Based Navigation (PBN) specification. This rule also incorporates by
reference the current version of Annex 2 (“Rules of the Air”) to the Convention on International Civil Aviation (the “Chicago Convention”), hereinafter referred to as “ICAO Annex 2,” in the FAA’s regulations.