Can anyone help explain the reason why aircraft tail logo lights are included in an (M)MEL?
I think its the case of "if you have it, it must work".
In other words if you want to permanently disable the "logo lights" you have to have a service bulletin that would: remover the switch, disconnect the wiring and cover over the lens. Not just let the bulb burn out and ignore it forever.
ATC: "After the landing xxx airways aircraft" or, as in Paris, "give way to the air france"
It could be that at night, it is a little more difficult to to see the airline if the logo lights are u/s.
Or I could be completely wrong.
Highly unlikely as many airlines don't have "logo lights".