4.) AGA - Aerodrome Ground Lighting

Question 1

What is the purpose of lighting?

Answer 1

To provide the pilot with:
LOCATION
ORIENTATION
ALIGNMENT
In poor visibility, and at night

Question 2

What is the purpose of approach lighting?

Answer 2

To provide the pilot with
information on:
ALIGNMENT
ROLL GUIDANCE
LIMITED DISTANCE TO GO
for visual completion of an
instrument approach

Question 3

Direction of lights

Answer 3

BOTH FLUSH and ELEVATED (HI or LI) can be constructed to illuminate thus:

UNI-DIRECTIONAL
BI-DIRECTIONAL
OMNI-DIRECTIONAL
OMNI & BI -DIRECTIONAL

Question 4

Precision approach - CAT1

Answer 4

DH - Not Lower Than 200ft
VIS - Not Less than 800m OR RVR Not Less than 550m

Question 5

What does approach slope indicators provide info on? (3)

Answer 5

• Achieved approach angle
• Clearance over approach obstacles
• Limited roll guidance

Question 6

What is MEHT?

Answer 6

(Minimum Eye Height above Threshold - MEHT)
h = Pilot’s eye to lowest wheel height in normal landing
configuration
(unless threshold is displaced by more than 300m

Question 7

What are the colours of taxiway lighting?

Answer 7

Green Centreline & Blue Edge

Question 8

When shall aerodrome lighting be displayed?

Answer 8

any ATD as follows:
By day:
High intensity systems, where installed on the runway to be used, whenever the visibility is less than 5 km and/or the cloud base is less than 700 ft.

By night:
Always, Irrespective of weather condition