This document will explain the instrument approach charts named IAC charts.
These charts are used by pilots for performing initial, intermediate and final approach routes.
This document will show you some commented examples.
Be aware that each country has its own chart presentation. You need to catch your information using a quick analysis of the chart.
The head of document will show you the name and ICAO code of the applicable airfield, the type of chart.
You will also find the name and the type of approach on the considered runway. There is a frequency list of available air traffic controllers for this approach.
Note: For IVAO, this table is not applicable. Only the frequencies of the connected air traffic controllers on the network are working and are usable by pilots.
Below the head of document, there is some data and information for the pilot.
The chart extract below shows ILS parameters including:
Localizer frequency, course, glide scope altitude, ILS decision altitude, airport elevation altitude
There is also other information like
Charts below can show other parameters due to the different type of approach.
The chart extract below shows VOR parameters including: VOR frequency, approach course, minimum check altitude, minimum descent altitude, airport elevation
There is also same information like the other chart:
Each IAC chart has a horizontal view of the approach track. This view shows:
if Another IAC chart has a different horizontal view. In this chart, we can identify a procedural turn in function of aircraft category where an aircraft is not coming in the same direction of the final approach track.
In this chart, you can also point out some limitation of certain flight parameters:
Each IAC chart has a vertical view of the approach track. This view shows the track; mainly the final approach track:
Another type of approach (VOR approach) can have a procedural turn. The overview of a procedural turn is represented like the image below:
You must combine the horizontal view of the chart with the vertical view in order to fly this procedure.
Each IAC chart has IFR approach minima which are located at the bottom of the chart. In this chart, there are minima of different types of approach applicable for this chart. ILS DME or ILS Radar approach, Localizer DME or Localizer Radar approach, Circle to land approach
Note: The RVR (runway visibility range) or the visibility has different values on charts:
- Default unit is metre or kilometre: example RVR 550m / VIS 0.8 km
- Sometimes you will see other units: example RVR 26 or ½ = RVR 2600ft or ½SM
This is an example if of an ILS approach: