IVSI stands for what indicator?

• A. Instantaneous Vertical Speed Indicator
• B. Indicated Velocity Sensor Instrument
• C. Integrated Vacuum Sensor Indicator
• D. Inertial Vector Speed Instrument

Answer: (A)

The main idea here is knowing aviation instrument acronyms and what they measure. IVSI stands for Instantaneous Vertical Speed Indicator, which is the instrument that shows how fast you’re changing altitude right now. It displays vertical speed, usually in feet per minute, so you can see whether you’re climbing or descending and at what rate. The reading reflects the current change in altitude, helping you manage climbs, descents, and smoothness during approaches or level-off.

This is different from an altimeter, which shows your absolute altitude rather than how quickly you’re changing it. The other options don’t correspond to standard instrument names you’d encounter in flight, so they wouldn’t be the correct description for IVSI.