Which of the following represents a complete initial IFR clearance?

The correct choice illustrates a complete initial IFR clearance as it includes all essential components required for a pilot to safely depart on an IFR flight. An initial IFR clearance typically consists of the aircraft call sign, the destination airport, the intended routing or the means of navigation to get there, and the assigned altitude to maintain after departure.

In this case, it starts with the aircraft call sign, followed by the clearance to Palm Beach County Airport, indicating the destination. The phrase “via direct route” is crucial here, as it specifies the method the pilot should follow to reach the airport, fulfilling the routing requirement. Finally, the instruction to maintain an altitude of 6,000 feet provides the final key component of the clearance.

The other options lack one or more critical elements. For example, some do not specify routing, meaning they do not provide enough detail for complete navigational guidance. Others may fail to include either a direct route or an assigned altitude, which are vital for adherence to IFR flight protocols. Thus, the chosen option fully encapsulates the requirements for an IFR clearance, providing clarity and direction for the pilot.