On Sep 20, 8:15*pm, Robert Gaines
wrote:
In other words, making an (emergency?) call on common

frequencies to establish contact with a private or commercial flight,
with the request to relay the information to your intended contact by
radio or phone.

Unless things have changed, commercial (Airliners) do not monitor 121.5.
*Bob

My understanding is that since 9/11 this has changed and they do often
monitor 121.5 while enroute.

However I would love to hear from some of the airline pilots to
confirm or refute this information.

The glider pilots/airline pilots I know also often monitor 123.3. I
will check with them when I get a change to see if they routinely
monitor 121.5.

Brian
CFIIG/ASE