Exam (elaborations)
Aerodrome Lighting Questions and Answers
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Exam of 5 pages for the course Beacon at Beacon (Aerodrome Lighting)
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Aerodrome LightingWhen must an aerodrome beacon/aerodrome location beacon be provided? - answer
An aerodrome beacon or aerodrome location beacon must be provided if the aerodrome
is used for night operation and if:
- Aircraft navigate by visual means.
- Reduced visibility is a frequent occurrence.
- It is difficult to locate the aerodrome from the air because of surrounding lights or
terrain.
What identification means must an aerodrome have that is used at night and difficult to
identify? - answer An aerodrome used at night and not easily identified from the air must
have a flashing beacon that transmits a Morse 2/3 letter identification code.
How often is the aerodrome location beacon flashed? - answer Every 2-3 seconds.
What colour is the aerodrome location beacon at a civil land aerodrome? - answer A
green light is used at civil land aerodromes.
What color is the aerodrome location beacon at a civil water aerodrome? - answer A
yellow light is used at civil water aerodromes.
What colour is the aerodrome location beacon at a military aerodrome? - answer A red
light is used at military aerodromes.
What type of aerodrome lights must be frangible? - answer- Elevated runway, stop way,
and taxi lights.
- Approach lights and supporting structures within 300m of the threshold.
What are the requirements for the height of aerodrome lights? - answerTheir height
must be sufficiently low to preserve clearance for propellers and engine pods.
What are the requirements for runway light intensities? - answerRunway light intensity
must be comparable with the nearest section of approach lighting but separate intensity
controls must be provided to ensure the following are operated at the correct intensity:
- Approach lighting system (ALS).
- Runway edge, threshold, end, centre line, and touchdown zone lights.
When must all aeronautical ground lights be operated? - answer- Continuously during
the hours of darkness after evening civil twilight until the start of morning civil twilight.
- When required for the control of air traffic control.
- At any time when their use, based on weather conditions, is considered desirable for
safety of air traffic control.
, How long before their use are aeronautical ground lights required to be operational? -
answerThey must be operational at least 1 hour before the expected arrival of an
aircraft.
What colour are obstacle lights on emergency or security vehicles? - answerObstacle
lights displayed on emergency or security vehicles must be flashing blue.
What colour are obstacle lights on all other vehivles? - answerObstacle lights on all
other vehicles must be flashing yellow.
What colour are low intensity obstacle lights? - answerLow intensity obstacle lights are
steady red on structures up to 45m AGL.
What colour are medium intensity obstacle lights? - answerMedium intensity obstacle
lights are flashing red or white on structures greater than 45m AGL.
What colour are high intensity obstacle lights? - answerHigh intensity obstacle lights are
flashing white.
When are high intensity obstacle lights required? - answerHigh intensity obstacle lights
are required on structures taller than 150m AGL.
What does the type of approach lights used depend on? - answerThe type of approach
lights used depends on the approach category of the runway.
What are the different categories of approach lighting systems? - answer- A simple non-
precision ALS.
- A precision approach CAT I ALS.
- A precision approach CAT II and III ALS.
What colour lights do approach lighting systems use? - answerThe approach lighting
system lights are fixed variable white lights.
What does a simple non-precision approach lighting system consist of? - answerA
simple system consist of a row of lights on the extended centre line of the runway,
extending for not less than 420m and a crossbar of 18 or 30m in width, 300m before the
threshold.
What may a simple approach lighting system serve? - answer- A non-instrument runway
at night of code 3 or 4.
- A non-precision runway.
- A CAT I runway when a CAT I lighting system is impractical.
What should each centre line light of an approach lighting system consist of? -
answerEach centre line light shall consist of either:
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