What actions should a pilot take after receiving an IFR clearance?

After receiving an IFR clearance, the pilot should read back the clearance and set the transponder code. This action is crucial for several reasons. First, the read-back process confirms that the pilot has accurately understood the instructions given by air traffic control (ATC). This is particularly important in maintaining clear communication and preventing misunderstandings that could lead to dangerous situations.

Setting the transponder code is equally important as it allows ATC to identify and track the aircraft on radar. The assigned transponder code ensures that the aircraft is visible to ATC, facilitating safe separation from other aircraft during flight.

Immediate taxiing or changing course according to a personal navigation plan would be premature, as the pilot has not yet confirmed the clearance or ensured that all necessary procedures are in place. Waiting for further instructions could lead to unnecessary delays that may disturb the flow of air traffic, especially if the pilot is duly cleared to begin taxiing or with specific instructions to follow. Therefore, reading back the clearance and setting the transponder code is the correct procedure to follow after receiving an IFR clearance.