What is a requirement for landing gear position indication in VFR Day operations?

The correct answer regarding landing gear position indication in VFR Day operations is that it must be installed. This is based on regulations that mandate specific safety features and equipment necessary for aircraft operation. For helicopters, the installation of landing gear position indicators contributes to overall situational awareness during flight operations.

In VFR (Visual Flight Rules) operations, especially during the day, having an installed landing gear position indicator is crucial as it helps pilots ensure that the landing gear is properly configured for landing or takeoff. While it may be possible for some types of aircraft to operate without this indicator under certain conditions, the underlying principle of safety and operational readiness generally dictates its presence in helicopters.

The other options regarding specific requirements for night flights, applicability to helicopters, and functionality may not align with the overarching regulatory requirements for VFR operations. Notably, while some features may have different requirements for different flight conditions or types of aircraft, the emphasis on having the indicator installed speaks to broad standards that prioritize safety in aviation operations.