There are three major sections of this document: "(1) Describes the basic concepts of Fatigue Risk Management Systems (FRMS) and how they relate to aviation industry employees safely performing their duties. (2) Provides information on the components of a FRMS as applied to aviation and how to implement a FRMS within an aviation operation. (3) Defines a FRMS as an operator-specific process; therefore, while all FRMS will have common elements, the specifics must be tailored to an operator's particular conditions."
AC No: 120-103
Federal Aviation Administration: http://www.faa.gov