HF – High Frequency

[Ref AVIA4019, ACE The Technical Pilot Interview 149/348, 150/348] 3-30 MHz (application in aviation from 2 to 22 MHz) uses predictable sky wave propagation paths (i.e refracted off the earth’s ionosphere over great distances) for longer-distance communication but degraded quality and for communications between two specific points only usually for oceanic/desert areas which covers a large […]


[Ref AIP Australia GEN 2.2-20] MULTICOM – the frequency (126.7 MHz) used for broadcast in the vicinity of a non-controlled aerodrome that does not have a discrete CTAF assigned   Read More – #CTAF #UNICOM #Broadcast Area

Common Traffic Advisory Frequency (CTAF)

[Ref Jeppesen, AIP Australia GEN 2.2-6, GEN3.2-10] Warning – the definition of CTAF is a bit different between Australia and Jeppesen. Common Traffic Advisory Frequency (CTAF) – in Australia CTAF is a designated frequency on which pilots make positional broadcasts when operating in the vicinity of a non-controlled aerodrome OR within a Broadcast Area. IMPORTANT […]

VFR cruising levels (Odd or Even?)

[Ref VFRG (AU), Australia AIP ENR 1.7] VFR flights must be flown at a cruising level appropriate to its magnetic track according to the diagram below and the table: when cruising level is 5000 ft or higher; or when practicable when cruising level is below 5000 ft (CAR 173).     Magnetic tracks From 000° […]

Area Navigation (RNAV)

[Ref Jeppesen, FAA-H-8083-25B Page 16-28] What’s RNAV? A method of navigation which permits aircraft operation on any desired flight path within the coverage of the station-referenced navigation aids or within the limits of the capability of self-contained aids, or a combination of these. Area Navigation Route (RNAV route) — An ATS route established for the […]