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Quoting Gulfstream650 (Thread starter): |
Quoting LGWflyer (Reply 1): I see quite a few emergencies everyday shown on radar24, not sure if they are real or not... |
Quoting sandyb123 (Reply 6): She's squaking 7566 according to FR24. Is anything 75XX hyjacking? |
Quoting CX Flyboy (Reply 9): especially as 7500, 7600 or 7700 could be momentarily set as the pilot slowly dials the actual transponder code into the 'box'. This in turn triggers an alarm in their ATC systems. |
Quoting YVRFlyer (Reply 5): The russians understandably tend to err on the side of pre-emptive action when it comes to these things. |
Quoting SSTsomeday (Reply 11): Why understandably? |
Quoting risingsunfitnes (Reply 12): KAL 007 comes to mind. |
Quoting wilco737 (Reply 7): Some stations even assign you a code which is close to the emergency code, like 7732 or something like that. But that is perfectly normal. Only 7700 is emergency. 7600 is com failure and 7500 hi-jack. |
Quoting CX Flyboy (Reply 9): |
Quoting BMI727 (Reply 10): Quoting CX Flyboy (Reply 9): especially as 7500, 7600 or 7700 could be momentarily set as the pilot slowly dials the actual transponder code into the 'box'. This in turn triggers an alarm in their ATC systems. I thought modern transponder systems made sure this is no longer possible. |
Quoting CX Flyboy (Reply 17): Unless your transponder has a button number pad instead of one with dials (like some of our planes) |
Quoting BMI727 (Reply 18): Quoting CX Flyboy (Reply 17): Unless your transponder has a button number pad instead of one with dials (like some of our planes) Yeah, I thought that was pretty much the standard these days. Obviously there are still some older planes that would have the dial (also more dramatic for movies) but I was under the impression that the accidental 7700 or 7500 was a problem that would soon be a non-issue. |
Quoting KFLLCFII (Reply 8): Good practice to dial in your squawk from right to left, so you don't accidentally dial in "7500" while on the way to "7566". |
Quoting CX Flyboy (Reply 17): Not sure to be honest but I don't see how unless there is a time delay built in before it transmits any new code it sees. If you have 0000 set and you slowly set each digit one by one, i.e. 7000 then 7500 then 7560 then 7566, you do momentarily have 7500 tuned. Unless your transponder has a button number pad instead of one with dials (like some of our planes) |
Quoting 26point2 (Reply 24): 2 alternate "safe" methods: "Tune" code into FMS then send to Transponder, or set Transponder to STBY while tuning. |
Quoting SSTsomeday (Reply 11): Quoting YVRFlyer (Reply 5): The russians understandably tend to err on the side of pre-emptive action when it comes to these things. Why understandably? |
Quoting TripleDelta (Reply 23): Don't know whether it is applicable on transport aircraft transponders (I could foresee a complication or two), but on light aircraft we were always taught to momentarily set the transponder to standby, dial in the new code and the return it to A or C mode. |
Quoting cschleic (Reply 25): I used to do this in light planes, then once had ATC ask me why I turned off the transponder or if it malfunctioned. They then waited until it recycled before letting me change course. Fortunately, I've never been assigned a code beginning with 7. |
Quoting wilco737 (Reply 28): Yes, because we pilots are not allowed to make a mistake. But if it happens, the world has to know about it |
Quoting suseJ772 (Reply 29): I was never taught that and I don't think the ATC people I have dealt with would like it if I turned off my transponder in order to input a new code. For this reason... |
Quoting suseJ772 (Reply 29): I was never taught that and I don't think the ATC people I have dealt with would like it if I turned off my transponder in order to input a new code. For this reason... |
Quoting tb727 (Reply 31): Quoting suseJ772 (Reply 29):I was never taught that and I don't think the ATC people I have dealt with would like it if I turned off my transponder in order to input a new code. For this reason...I always do it, I was actually taught it when I moved out of light a/c. I was told you weren't flipping through all kinds of codes that way. Sure you are going through multiple codes for a quick moment, you are also in standby for a quick moment, I guess it doesn't really matter. I mainly do it as a good way to swap transponders in flight to make sure they are both working even though I tend to do it every leg. |
Quoting 26point2 (Reply 24): Quoting KFLLCFII (Reply 8): Good practice to dial in your squawk from right to left, so you don't accidentally dial in "7500" while on the way to "7566". 2 alternate "safe" methods: "Tune" code into FMS then send to Transponder, or set Transponder to STBY while tuning. |
Quoting 26point2 (Reply 24): Quoting KFLLCFII (Reply 8): Good practice to dial in your squawk from right to left, so you don't accidentally dial in "7500" while on the way to "7566". 2 alternate "safe" methods: "Tune" code into FMS then send to Transponder, or set Transponder to STBY while tuning. |
Quoting pliersinsight (Reply 33): Wouldn't switching to standby take you out of the protection of TCAS or TIS systems.....? I'm not so sure switching the transponder to standby is a safe move in flight. What if you forgot to switch it back? |