Coded Departure Routes (CDR)

  • CDRs are meant to reduce workload between various ATC facilities. They are also meant to reduce frequency congestion by minimizing read-back time between ATC and pilots when alternate route clearances are needed due to weather conditions.
  • Each CDR is assigned an eight-character code to represent a predefined route between specific city pairs.
  • A city pair may have more than one CDR.
  • There are roughly 15,000 CDRs in effect at the present time.
  • If a CDR exists between your departure and arrival airport on, you will see a button at the bottom of the Nearby Routes display on the Flight Plan Data Entry Page.
  • There is also a button on the our Main Menu Page which will allow you to check for existing CDRs between city pairs.
  • General information and procedures concerning Coded Departure Routes:
  • Request a full route clearance if there is any doubt of understanding the abbreviated clearance.
  • Tell the controller you are unable to accept a CDR if the aircraft is not properly equipped to fly the issued CDR. For example, some CDRs may require HF communication or Area Navigation capability.
  • You must have on board all current CDRs for the specific city pair you are expecting to fly.
  • Put the phrase “CDR CAPABLE” in the remarks section of your flight plan. You may still receive a reroute if ATC deems it necessary, but no abbreviated clearance will be issued.
  • Some CDRs add hundreds of miles to your normal route between city pairs. Special consideration must be given to fuel requirements and IFR fuel reserves.
  • The flight crew is responsible for maintaining a current database of CDRs.
  • Any questions pertaining to the use of CDR procedures may be directed to:
    NY TRACON - Tom White – – (516-683-2980)
    NY CENTER – Bob Ocon – – (631-468-1015)


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