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9
2.2.6 Intensity Control
Table 3 provides guidance on how to interface the Radio Control with the intensity settings of
the airport lighting system. For example, connect a lighting system with five intensity settings
so three clicks of the microphone would power brightness setting 1 or 2, five clicks would
power setting 3, and seven clicks would power setting 5. The airport authority may select
either setting 1 or 2 for the lowest brightness setting, depending on the background lighting at
the airport.
Table 3:
Interface of Radio Control with Airport Visual Aids
Lighting System
Number of Intensity
Steps
Status During Idle
Periods*
Intensity Setting Selected per Number of
Microphone Clicks
3 clicks
5 clicks
7 clicks
Approach Lights
2
3
5
Off
Off
Off
Low
Low
1 or 2
Low
Medium
3
High
High
5
Edge Lights:
Low Intensity
Med. Intensity
High Intensity
1
3
5
Off
Off or Low
Off or Low
On
Low
1 or 2
On
Medium
3
On
High
5
Taxiway Edge Lights
1
2
3
Off
Off
Off
On
Low
Low
On
Low
Medium
On
High
High
Runway Centerline
Touchdown Zone Lights
5
Off
1 or 2
3
5
Taxiway Centerline Lights
3
5
Off
Off
Low
1 or 2
Medium
3
High
5
REILS
1
2
3
Off
Off
Off
Off
Off
Low
Off
Low
Medium
On
High
High
Visual Glideslope Systems
3
5
Off
Off
On
Low
On
Medium
On
High
NOTE:
* If the runway lights are left on during idle periods, other lighting systems may also be left on at a pre-selected
brightness. Table 3 is from FAA AC 150/5340-30, Table 8-1.
