BTW, don't assume that you'll see the light gun signals just becasue we're using them. Especially during the day. Those guns are OLD, and the bulbs and/or reflectors aren't the best. Also, the next time you're taxiing, really pay attention to how much time you spend watching the tower for a light gun signal. If you KNOW you're NORDO, maybe. But what if you DON'T know?
It sounds like the FAA needs to get training up to speed with lightguns or get updated light guns but that is a whole topic on it's own....
If I don't know I am nordo after leaving the non movement, then obviously I would be adhering to any taxi clearance given, and I would expect the controller to expect that if I don't respond keeping ground traffic clear of my clearance.
I also suspect I would find out I am NORDO once I am ready to contact tower for departure. Of course, this would be the tricky part on my end on what to do next since my clearance was only to the departure runway.
I have encountered two situations where I was "partially nordo" once after departing my own non controlled airport and at KJAN. Both situations were where I could here, but could not transmit.
For the departure situation, I switched the headset jacks to the passenger side and that fixed my problem with COMS until I got to Daytona where I got the PTT fixed.
Second situation, I used the IDENT feature to ground to alert them that I was having a problem and they acknowledge after IDENTING a few times and I was able to communicate I needed to get back to the ramp. So NORDO does take some ingenuity in using all tools.
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