Michelle P wrote:
Doug,
Since the was Airlifeline, Angel Flight Mid-atlantic, Southest, West,
Lifeline pilots..... They all used different Call signs or none at all.
The organizations got together in late 1990s...

I did some more searching and found that the "Air Care Alliance" got the
FAA to accept the "Compassion" call sign in May of 1999 (see:
http://www.aircareall.org/callsign.htm#cmpsn-procedures) and that "Angel
Flight" got the FAA to assign the "Angel Flight America" call sign in
June, 2000 (see: http://www.angelflightsc.org/NGFcallsign.html).

Somewhat confusing... I noticed that "Angel Flight, Inc." uses
"Compassion" instead of "Angel Flight."


Apparently its just different organizations doing their own thing; all
for a good cause though!