Ground power should be connected to all arriving aircraft except?

The reason the 787 does not require ground power to be connected upon arrival is due to its advanced systems and electrical architecture. The Boeing 787 Dreamliner is designed with a more efficient electrical system that allows it to rely on its onboard batteries for a longer duration after landing. This design minimizes the immediate need for external ground power, allowing the aircraft to operate effectively with its internal resources before ground power is connected.

The other aircraft in the options generally rely on ground power connections upon arrival to maintain systems, such as cabin climate control, lighting, and other essential electrical functions, especially before the engines are turned off or during maintenance checks. The 787's ability to sustain itself with onboard power helps streamline ground operations and enhances overall efficiency in handling the aircraft post-landing.