Advisory Circular 91-84 – Aircraft Fractional Ownership Programs describes an acceptable means, but not the only means, to apply for and obtain authorization to conduct a fractional ownership program under Title 14 of the Code of Federal Regulations (14 CFR) part 91 subpart K.

This Advisory Circular also provides continuing guidance for a fractional ownership program and the application process for obtaining management specifications (MSpecs) to operate under Title 14 of the Code of Federal Regulations (14 CFR) part 91 subpart K (part 91K).

01/23/2009AC 90-105AC 90-105 Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System