What should a pilot enter in the REMARKS section of the IFR flight plan if they do not wish to use an instrument departure procedure?

In the context of filing an IFR flight plan, when a pilot wishes to opt out of using an instrument departure procedure (IDP) that is otherwise standard for their departure airport, it is best to indicate that preference clearly in the REMARKS section. The phrase "No DP" succinctly communicates to air traffic control and other relevant parties that the pilot does not wish to follow any established departure procedure.

This entry is explicit and easily understood, allowing for efficient processing of the flight plan. The simplicity of the phrase avoids any potential confusion while ensuring that the information is communicated effectively. Other phrases, while they might express the same intention, could be subject to interpretation or may not align with the specified communication standards that controllers expect.

Using "No DP" clearly signifies the pilot's intention and establishes a record for the flight plan, which helps maintain operational clarity and safety.