What does NOTAM stand for and what is its primary purpose?

NOTAM stands for "Notices to Airmen." Its primary purpose is to provide essential information about any hazards or significant changes concerning airports, air traffic procedures, or flight operations that could affect the safety of flight. This information is crucial for pilots and flight crews to make informed decisions regarding their flight plans and safety measures.

While the other choices may suggest related content, they do not accurately represent the meaning of NOTAM or its specific function in aviation. Choice A misinterprets the term by implying it refers to air traffic advisories rather than the broader safety notices provided to pilots. Choice C incorrectly describes NOTAM as related to navigation over time, which does not match its actual definition. Therefore, choice B accurately identifies NOTAM's function and meaning.