The Six Pack: Basic Flight Instruments
Pilot Institute
JANUARY 27, 2025
The six primary instruments (the six-pack) are the Attitude Indicator (AI), Heading Indicator (HI), Turn Coordinator, Airspeed Indicator, Altimeter, and the Vertical Speed Indicator (VSI). The stability of the spinning disc increases with an increase in mass or speed of the disc. vertical speed), and airspeed.
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