The purpose of this amendment to CAP 168 is to propose changes to the requirements for licensed aerodromes and to provide further guidance and explanatory material.  Several factors have driven the need for and timing of this amendment.  These include incorporating information from NOTALs into CAP 168, development of good practice from industry, changes to technology, AAIB Safety Recommendations, and aligning UK requirements to ICAO Standards and Recommended Practices (SARPs) where practicable.