HF Aeronautical Communications

From The RadioReference Wiki

Aircraft on HF

Aircraft utilize HF communications when VHF (Line of Sight) communications is not sufficient. The primary usage of HF is for Trans-oceanic flights. Trans-oceanic flights communicate with ground stations via HF for position reports and other purposes. Another utilization of HF communications is for HFDL or High Frequency DataLink. Finally Military Aircraft (MILCRAFT) utilize HF for operational and training.

Aeronautical Weather Via HF

Aircraft on trans-oceanic flights can receive updated weather conditions via VOLMET (meteorological information for aircraft in flight) networks.