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United States Department of TransportationUnited States Department of Transportation

AC 91-77 - General Aviation, Coded Departure Routes (CDR)

Document Information

Number
91-77
Title
General Aviation, Coded Departure Routes (CDR)
Status
Active
Date issued
2007-06-01
Office of Primary Responsibility
AJR-1, Air Traffic
Description
Provides guidance to customers of the National Airspace System on the use of Coded Departure Routes. CDRs provide more flexibility for selecting an alternate departure for specific airport when traffic constraint such as thunderstorms, turbulence, and periods of excessive demand exist. Use of a CDR reduces key-entry inputs for controllers and minimizes read-back time between tower staff and pilots, which creates an abbreviated clearance. These abbreviated clearances provide an efficient means for air traffic control (ATC) to provide alternate routes if an airspace constraint occurs.
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