The sign before the accident
The 180 Sign kills Carter.
The Le Cáfe Miro 81 sign, also known as the 180 sign, was a sign located in Paris, France of a restaurant named Le Cáfe Miro 81 in the film Final Destination. It was part of a sign (originally the sign said "Le Cáfe Miro 81") that came loose once a chain of events started, beginning with a bus knocking it out of its sockets. When it swings down, it very clearly reads "18 o" and is heading right for Alex Browning. Just as it is about to hit him, Carter Horton knocks him out of the way and saves him. Carter tells Alex that he is next, but he responds by saying his death was just skipped. Carter begins to wonder who is next, only for the sign to appear out of nowhere and swing towards Carter instead, killing him off-screen.
It is debatable as to whether or not the sign itself is a Servant of Death. Seeing as how it causes the death of someone on Death's list (and because it appears out of nowhere before killing Carter) it could be a servant.
Because of this incident, Rory avoids his death in the collapse of a nearby theatre.