Saturday, Nov 17, 2007 at 19:50
Although most big ones do monitor 121.5, the rules (very generalised statement) only require you to check that the freq on take off and shutdown so you can make sure your
beacon is not active.
If aussar is made aware of a
beacon detection, either by satellite or aircraft hearing reports, they will request ATC to get aircraft in the area to specifically monitor and report hearing and none hearing reports.
This is for two reasons: The first is it helps to narrow down the general area, and the second is that if a detection was by satellite there will be two positions, the real one and an identical one on the opposite side of the satellites path. You have to wait for the next satellite pass to determine which is the real one.
For example if one of these spots is on the east coast and the other is west, monitoring would be in put place on both coasts in the general detection area. If you get a aircraft reporting a detection on the west coast you know the
beacon is that one and you can respond much quicker.
Most of the responses to beacons will be by the
aerorescue aircrafton contract to aussar, rescue helicopters located around the country (eg westpacs and police) and aircraft of opportunity such as the
Port Hedland Helo above (which looks like it did a great job). Its pretty rare for a 747 to be used to actually home and locate a
beacon source.
Of course the job can be a whole lot quicker if you have a new 406
Beacon :)
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