Overheard the other day one rotary say to another rotary, "Go to 123.45".
Interesting to hear how much work some people can get done in a transit from A to B
So we are capable of checking a map, changing radio stations, playing with GPS/ autopilot/ nav equipment, talking on radios, to control, other aircraft, ground crew, continually checking weather, looking out for other aircraft,.......
But we aren't capable of deciding if it is safe for us to check or make a txt. Sorry, but I have texts and phone calls coming and going all day, while flying or sitting in the office. The skill is in deciding what is important and what isn't.
a. When checking a map, changing radio, using GPS/autopilot/nav kit (I hope a TCAD is in that list), you are being spatially aware
b. Talking on a radio, by virtue of the fact the pressel is on the cyclic, you are hands on and still able to look out
c. By checking weather, as with looking out for other aircraft, you are looking out
All of these things are momentary actions, not requiring sole concentration for more than 2-3 seconds. Compare the time taken to change a radio frequency or confirm position on your map, to the time taken to read and reply to a text.
By texting, your whole attention is inside the ac looking at and operating your device. We humans simply do not have the ability to concentrate on more than one thing at a time.
Apple Toss