scope:

PURPOSE.

This notice contains direction and guidance for aviation safety inspectors (ASI) about the Air Transportation Oversight System (ATOS) as the system safety approach to Federal Aviation Administration (FAA) certification, surveillance, and certificate management. ATOS is the FAA's business process for Title 14 of the Code of Federal Regulation (14 CFR) part 121 air carrier oversight. Exceptions to the requirements and standards described in this appendix must have the specific approval of the Flight Standards Certification and Surveillance Division, AFS-900.