Summary of Change.
Volume 3, Chapter 18, Section 4, Part B Operations Specifications—En Route
Authorizations and Limitations.
Explanation of Policy Changes. This change
completely rewrites operations specification (OpSpec) B045 by removing the 30-minute
communication gap for Title 14 of the Code of Federal Regulations (14 CFR) parts
121, 125, and 135 operators, adds a management specification (MSpec) B045 for
14 CFR part 91K operations, and adds a letter of authorization (LOA) for
14 CFR part 125 subpart M (125M) operations.