CPDLC

Transportation & Travel abbreviation · Aviation

CPDLC
Stands forController-pilot data link communications
CategoriesTransportation & Travel

CPDLC stands for Controller-pilot data link communications, an aviation abbreviation.

Text messaging between air traffic controllers and flight crews, used for clearances, frequency changes and requests instead of voice radio. CPDLC is standard over oceans and is increasingly used at busy airports for departure clearances.

Example: Shanwick sent our oceanic clearance by CPDLC, and the captain accepted it with one button press.

Usage notes

Data link reduces readback errors and frequency congestion, and messages come from standardized sets so both sides see identical wording. In the US the FAA's Data Comm program brought CPDLC departure clearances to dozens of airport towers starting in 2016, followed by en-route service. Europe has mandated it above FL285 in much of its airspace.

More aviation abbreviations

  • BVLOS – Beyond visual line of sight
  • CASM – Cost per available seat mile
  • CAVOK – Ceiling and visibility OK
  • CFI – Certified flight instructor
  • CFII – Certified flight instructor - instrument
  • CFIT – Controlled flight into terrain
  • CPL – Commercial pilot license
  • CRM – Crew resource management
  • CTAF – Common traffic advisory frequency
  • CVR – Cockpit voice recorder
  • DA – Decision altitude
  • DH – Decision height

See all 142 aviation abbreviations →