Localizer and ILS identifier methodolgy

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   I recently had a DPE tell me that while conducting an instrument checkride using a Garmin system, the ILS identifier displayed the correct ID for the approach, but when listening to the morse code, it was incorrect.  Instead of an"I" preceding the airport identifier it was a "K". He reported it and it was ultimately updated, the wrong morse code had in fact been entered for the ILS.

This made me wonder if the ID methodology is actually the physical location and frequency pair and not the morse code that is transmitted.

Can you verify if the Avidyne IFDs use the morse code or the location/frequency pair to display the ID.

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cavu Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 17 Apr 2015 Location: KRME Status: Offline Points: 152	Post Options Post Reply Quote cavu Report Post Thanks(0) Quote Reply Topic: Localizer and ILS identifier methodolgy Posted: 20 Dec 2023 at 3:44pm
	I recently had a DPE tell me that while conducting an instrument checkride using a Garmin system, the ILS identifier displayed the correct ID for the approach, but when listening to the morse code, it was incorrect. Instead of an"I" preceding the airport identifier it was a "K". He reported it and it was ultimately updated, the wrong morse code had in fact been entered for the ILS. This made me wonder if the ID methodology is actually the physical location and frequency pair and not the morse code that is transmitted. Can you verify if the Avidyne IFDs use the morse code or the location/frequency pair to display the ID.

rolfe_tessem Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Jan 2012 Location: Massachusetts Status: Offline Points: 183	Post Options Post Reply Quote rolfe_tessem Report Post Thanks(0) Quote Reply Posted: 21 Dec 2023 at 9:43am
	Not exactly the same situation, but when flying a practice ILS, in VFR conditions, to an airport that uses the same localizer frequency for both directions, sometimes the tower doesn't switch the localizer over to the runway in use. The morse code ID is different, but the frequency is the same. Rolfe

AviSteve Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2153	Post Options Post Reply Quote AviSteve Report Post Thanks(0) Quote Reply Posted: 22 Dec 2023 at 3:33pm
	The IFD decodes the Morse code from the radio signal.
	Steve Lindsley Avidyne Engineering

cavu Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 17 Apr 2015 Location: KRME Status: Offline Points: 152	Post Options Post Reply Quote cavu Report Post Thanks(0) Quote Reply Posted: 22 Dec 2023 at 3:51pm
	Good to hear. Must be a Garmin thing.