What are the three main headings found under the UK AIP?

The three main headings found under the UK Aeronautical Information Publication (AIP) are General, En-route, and Aerodromes. This structure provides a comprehensive framework for the critical information required by pilots and operators.

The 'General' section contains foundational information applicable to aviation in the UK, including regulations, airspace classifications, and information relevant to all flights. The 'En-route' section contains information that pertains to navigation and operations between departure and destination points, including route structures and pertinent air traffic control procedures. Finally, the 'Aerodromes' section provides specific information about airports and airfields, including runway specifications, facilities available, and any unique regulations or operational procedures at each location.

This division into these three categories ensures that pilots have access to well-organized and logical information tailored to their needs before and during the flight. Each section plays a vital role in safe flight planning and operational efficiency. The other options do not reflect the structured approach and category relevance as accurately as this set of headings does.