Which equipment is NOT a VFR instrument requirement for private operation?

The correct answer is the altitude indicator, which is not a requirement for VFR (Visual Flight Rules) operations in private flying. Under VFR regulations, aircraft are required to have certain basic instruments and equipment to ensure safe navigation and operation within visual meteorological conditions.

An airspeed indicator, magnetic compass, and timepiece are all essential instruments that aid pilots in maintaining situational awareness and navigation during flight. The airspeed indicator helps the pilot to determine the speed of the aircraft relative to the surrounding air, which is crucial for safe takeoff, landing, and overall control. The magnetic compass assists with navigation by providing directional information, and a timepiece serves as a reference for flight timing and planning.

In contrast, while an altitude indicator is generally useful for monitoring altitude, it is not mandated for VFR operations under local aviation regulations. Pilots must still maintain awareness of their altitude, typically by visual reference or other means, but the specific visual flight rules do not require the presence of an altitude indicator in the cockpit.