Some radios have a sleep mode that causes communication failures without being noticed. This results in serious security and cost issues for the military.
Radio communication failure is a rare occurrence, but it can result in undesirable situations. Present ICAO provisions are not always adequate or practical.
IFATCA Policy is:There shall be a globally standardised procedures for communications failure which: a) Take into account the availability of ATS surveillance systems and alternative communication methods; and b) Prescribe a minimum time during which the flight continues in accordance with the ATC clearance after the flight crew recognises the communication failure. |
| See: Resolution B7 – WP 87 – Bali 2013, Resolution B43 – WP 62 – Virtual 2022, WP 96 – Abu Dhabi 2025 |
Last Update: 29th December 2025
