What provides increased situational awareness by replacing the ADI in a modern cockpit?

The Primary Flight Display (PFD) serves a crucial role in enhancing situational awareness within a modern cockpit by integrating essential flight information into a single, easy-to-read screen. Unlike the traditional Attitude Director Indicator (ADI), the PFD consolidates various flight data, such as altitude, airspeed, heading, vertical speed, and attitude, into one display. This integration allows pilots to quickly assess the aircraft's current status and make informed decisions without having to scan multiple instruments.

The PFD's graphical representation of flight data makes it more intuitive, thus reducing the pilot's workload and increasing their ability to react swiftly to changes in flight conditions. Its design is specifically aimed at minimizing the time needed to interpret critical information, which is vital during high-stress situations or in complex flight environments.

While other displays such as Multi-function Displays (MFD), Engine Indicating and Crew Alerting Systems (EICAS), and Navigation Displays (ND) provide important information to the crew, they do not directly replace the specific functions of the ADI as comprehensively as the PFD does. MFDs offer a wider array of information, including navigation and system data, but they typically do not focus solely on flight instruments.