What's The Deal With The Yellow Cabs?

I’ve noticed little yellow cabs alongside some flight numbers. Apparently, it signifies the flight is an air taxi, but is FLG3971 really an air taxi?

I also noticed recently red cross icons alongside life flights.

The Houston crew has to much time on its hands.
I don’t think a 767 crew flying for North American would like to be considered as an air taxi flight either.

URL?

heck, I don’t know. It was only one of their flights yesterday. if that helps :laughing: