What Is Calm Wind In Aviation?
What Is Calm Wind In Aviation? Wind “CALM” means a wind speed less than 0.5m/s (1 kt) according to ICAO Annex 3, Appendix 3: 4.1. d) when a wind speed of less than 2 km/h (1 kt) is reported, it shall be indicated as calm; See also Annex 3: Appendix 5, recommendation 1.2. How do