Final answer:
NOTAM Authorities may delay transmitting NOTAMs regarding NAVAIDs or radars only when a published procedure covers the situation, alternative navigation means are available, or when safety is not compromised, despite some technical or operational constraints.
Step-by-step explanation:
Notice to Airmen (NOTAMs) are crucial for the safety and management of air traffic, providing essential information on changes that could affect flight operations. NOTAM Authorities typically transmit information on NAVAIDs (Navigational Aids) and radars without delay because these systems are fundamental to aviation navigation and safety. However, there are conditions under which the transmission of such NOTAMs may be delayed.
For NOTAMs concerning NAVAIDs or radars, any delay is typically only acceptable when the situation is covered by a published procedure or alternative means of navigation are available which do not significantly affect the safety of flight. Some potential conditions for permissible delay might include the availability of backup systems, the temporary nature of the NAVAID or radar outage, or situations where immediate broadcast may not be possible due to technical or operational constraints. In general, safety must not be compromised when considering a delay in transmitting NOTAMs.