What is vertical speed indicator VSI BC-2A?
The vertical speed indicator (VSI) is an instrument that displays the ascending and descending speeds to the pilot by measuring changes in pressure speed.
This information helps the pilot determine the direction of the aircraft.
Reacts before an altimeter change is detected, allowing pilots to be alerted faster.
May be referred to as the climb speed indicator, vertical speed indicator or vertical speed indicator (VVI).
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