Recreational Pilot Licence · Mock exam

The Vertical Speed Indicator (VSI) operates by sensing:

• A.The difference between indicated airspeed and true airspeed at the current altitude
• B.The rate of change of magnetic heading as sensed by the flux valve in the wing
• C.The rate of change of static pressure through a calibrated leak
• D.Aircraft pitch attitude as measured by the gyroscopic reference within the instrument