Which of the following is NOT one of the defined evacuation types?

• A. Main cabin door OPEN
• B. Main cabin door CLOSED / Jet Bridge NOT IN PLACE
• C. Main cabin door CLOSED / Jet Bridge IN PLACE
• D. Main cabin door OPEN / Jet Bridge IN PLACE

Answer: (D)

Evacuation types are defined by how people exit and whether a jet bridge is involved. When the main cabin door is open, evacuees typically exit onto the ramp, not through the jet bridge, which corresponds to a door-open, no-bridge scenario. If the door is closed, the presence or absence of a jet bridge defines the gate evacuation—either there’s no bridge or the bridge is in place for egress via the bridge. The combination of the door being open while a jet bridge is in place isn’t a defined evacuation type because, in practice, with the door open and the bridge connected, evacuation would use the jet bridge path, not a separate, defined configuration. That’s why the option with the door open and the jet bridge in place isn’t considered a defined evacuation type.