What is the minimum instrumentation required for day VFR flight?

For day VFR (Visual Flight Rules) flight, the Federal Aviation Administration (FAA) requires that certain instruments are available to ensure the pilot can safely navigate and operate the aircraft. The proper instrumentation must provide essential flight data, including speed, altitude, and orientation, which are critical for safe flight.

The correct choice includes the airspeed indicator, altimeter, fuel quantity indicator, oil pressure, and several other instruments that are necessary to maintain safe operational conditions and provide the pilot with real-time information on the aircraft's performance and status. Specifically:

• The airspeed indicator is crucial for understanding the aircraft's speed relative to the surrounding air, which affects lift and stall speed.

• The altimeter provides the altitude of the aircraft above sea level, allowing the pilot to maintain a safe height and avoid terrain or obstacles.

• Oil pressure and temperature indicators are vital for monitoring the engine's health and performance, as engine failure due to improper oil conditions can lead to catastrophic outcomes.

• The fuel quantity indicator ensures the pilot is aware of fuel levels to prevent running out of fuel during flight.

In summary, the correct answer comprehensively covers the essential instruments needed for day VFR flight, ensuring operational safety and compliance with regulatory standards set by aviation authorities. Other choices