Airlines Altimeter Primary Flight Display 
WayMan
JUNE 16, 2025
The main collection, commonly known as the “six-pack,” gives the primary flight parameters: Airspeed Indicator (ASI): Airspeed Indicator shows the speed of the aircraft with respect to the surrounding air mass, an important parameter for all flight phases.
Pilot Institute
NOVEMBER 30, 2024
In a round-dial cockpit, the six-pack of gauges are the core of the flight instruments. These cockpits combine all traditional instruments on multi-function displays (MFDs). This is called the Primary Flight Display (PFD). Most modern jets have glass cockpits if you plan to fly commercially at the airlines.
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