Can the pilot in command clear his own aircraft for IFR flight in controlled airspace?

The pilot in command is not permitted to clear their own aircraft for IFR flight in controlled airspace. In such environments, air traffic control (ATC) is responsible for providing clearance for IFR operations to ensure the safety and separation of all aircraft. This protocol is crucial for maintaining an organized flow of air traffic, preventing potential conflicts, and ensuring that all separation standards are adhered to.

In controlled airspace, pilots must communicate with ATC to receive the appropriate clearances before proceeding with IFR flight. This requirement helps maintain a structured environment where ATC can coordinate with multiple aircraft, delivering essential guidance on departures, arrivals, and in-flight routing. The mandatory nature of ATC clearance emphasizes the collaborative effort needed to maintain safety in busy airspaces.

The other options suggest scenarios or conditions where a pilot might self-clear, which do not align with standard procedures or regulations governing IFR operations in controlled airspace. Hence, the option stating that self-clearance is not allowed is the accurate and appropriate interpretation of the rules involving IFR flight protocols.