Section 2, Chapter 2 - Aerodrome Lighting Aids

Question 1

What are the key points regarding the operation of lighting systems and intensity controls in MATS Part 2?

Answer 1

• Operating instructions and intensity settings for lighting systems, for different weather conditions by day and night, are detailed in MATS Part 2. Typical settings can be found in CAP 168 Chapter 6 and may be adjusted by the controller or at a pilot’s request.
• General descriptions for intensity settings during RVR operations are in Section 3.
• Runway lighting may be temporarily switched off for accurate RVR reference light counting but not:
  1. During aircraft take-off,
  2. After an aircraft completes a final procedure turn,
  3. When an aircraft is within 5 NM from touchdown on a radar approach.

Question 2

What are the guidelines for displaying aerodrome lighting as specified in CAP 493?

Answer 2

Daytime Display:
* High intensity lighting used when visibility < 5 km and/or cloud base < 700 ft.

Nighttime Display:
* Lighting displayed regardless of weather conditions.

Visibility Reporting:
* Use the lower value when two visibility values are reported.

Local Assessment for Display Times:
* Consider technical specs of the lighting system, time to reach required brilliancy, and availability for emergency returns.

Post-ATD Lighting Display:
* Warn pilots if lighting will be displayed after aerodrome closing time and clarify availability of services like fire service and approach aids.

Obstruction and Hazard Beacons:
* Displayed at night during published watch hours and during the day if visibility < 3,500 meters.

Additional Display Times:
* Lighting may be displayed anytime if requested, required, or deemed necessary by the controller.