Easy Victor

[snopes]

Comment: I have been told the term "Easy Victor" originated from a war
(WWII?) that refers to an emergency landing of a plane.
The pilot's name was Victor and the plane was hit - the person with him
was telling him easy Victor to calm him as he was landing - that is why
today the "airline industry" uses that code name when making emergency
landings.

I have also heard it was a mayday code.