Chapter2 Electronic Flight Instruments Introduction This chapter introduces the electronic flight instrument  systems available with advanced avionics. You will see how  electronic flight instrument systems integrate many individual  instruments into a single presentation called a primary flight  display (PFD). Since all flight instruments are combined in  one integrated electronic flight instrument system, a number  of enhancements to conventional flight instruments are now  possible. In addition to learning to interpret the primary flight  and navigation instruments, you must learn to recognize  failures of the underlying instrument systems based on the  indications you see in the cockpit. You must also maintain  proficiency in using the backup/standby instruments that are  still part of every advanced cockpit. 