Which of the following is NOT a requirement for pilots to advise ATC?

The choice indicating that the flight plan does not include "NO SID" if a pilot is refusing a Standard Instrument Departure (SID) is indeed not a requirement for pilots to advise Air Traffic Control (ATC).

Pilots are required to inform ATC of their intentions and any changes that affect their flight operation. However, the specific context of a flight plan including the "NO SID" notation pertains to the filing process prior to departure. If a pilot is simply refusing to accept a SID and does not have it indicated in the flight plan, it does not impose a requirement to notify ATC. They must still communicate their refusal to comply with a SID or any potential operational constraints, but the omission of "NO SID" in the flight plan itself is not a mandated advisement fact.

This understanding assumes that pilots are aware of their responsibilities regarding SIDs and their necessity for safe and efficient traffic management. Each of the other choices involves a clear directive that would necessitate communication with ATC for operational clarity and safety.