Type A Charts

The Type A chart is intended to advise both aircraft operators and the Airport Authority of potential take-off flight path obstructions which may impact on aircraft performance considerations. A survey is undertaken from all current runway ends to identify the height and locations of obstacles that aircraft must safely clear when departing that runway. The slope to each of the obstacles is calculated to identify the critical obstacle; the obstacle where the slope from where the aircraft takes off to the top of the obstacle is steepest.

This information is distributed in a standardised format called a Type A chart; they include a database of all obstacles for each runway end. These charts, and associated database, are reviewed and updated with the latest survey information where a change is detected or at least once every two years.

Chart downloads:

• Type A Chart Runway 03/21
• Type A Chart Runway 06/24
• Type A Data