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  1. #1

    Default Fog at Auckland Airport - only national flights affected

    They said on the radio that there was fog at the airport this morning and 40 national flights were delayed or cancelled but international flights were not affected. Why is that? Obviously the international airlines have something that the national airlines do not. What is it and why do the national airlines not have that special something?
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  2. #2
    Seasoned Member allblack's Avatar
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    Default Re: Fog at Auckland Airport - only national flights affected

    Think I answered this a couple of months ago.

    Short answer (coz I'm at work) is larger aircraft that do international duties have many fancy avionics that read the ILS (Instrument Landing System) system on the ground. They can use this to guide themselves to the threshold of the runway with limited visibility with the pilot leaving things well alone. Depending on the rating of the ILS system the pilot can go to a lower altitude without visibility.

    Domestic aircraft will not be equipped with the very expensive electronics because it's not cost-effective. Diverting a A380 from Dubai is less appealing than an A320 from Wellington.

  3. #3

    Default Re: Fog at Auckland Airport - only national flights affected

    Thanks for that allblack. I have often wondered how that worked. Okay, then, back to work.

    Much appreciated.
    It is better to wear out than to rust out.
    - Richard Chamberlain, Tour of the Hebrides

    Us husbands are a sorry lot.

    Visit the Radio Reading Service: www.radioreading.org.nz

  4. #4
    Seasoned Member allblack's Avatar
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    Default Re: Fog at Auckland Airport - only national flights affected

    Here's a great example of what Cat3 ILS does - allows the A380 to get THAT close to the ground without being able to see it.

    Stunning.

    https://www.stuff.co.nz/travel/news/...l-of-fog-in-uk

  5. #5
    Senior Member piroska's Avatar
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    Default Re: Fog at Auckland Airport - only national flights affected

    The mass of electronic equipment in a modern airliner makes it a simple process for pilots to land them in the dark, in low cloud and equally, in the thickest of fog.

    But once on the runway, pilots rely heavily on the view from their plane’s windscreen to avoid collisions with other aircraft or airport vehicles as they taxi to the stand.

    “It’s not really an air traffic control problem, more a ground control problem,” said Richard Wright, a spokesman for National Air Traffic Services (Nats), which controls aircraft around the bulk of UK airspace.

    “They need extra space when they are coming into land and when they are taxiing at around the airport.
    “That means that an aircraft will have landed and will be well clear of the runway before the next one comes in.”


    And from and NZ Air controller:

    https://www.airways.co.nz/blog/how-d...ect-my-flight/
    Ex-pctek

  6. #6
    Rocket Dog WalOne's Avatar
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    Default Re: Fog at Auckland Airport - only national flights affected

    Quote Originally Posted by piroska View Post
    But once on the runway, pilots rely heavily on the view from their plane’s windscreen to avoid collisions with other aircraft or airport vehicles as they taxi to the stand.
    “That means that an aircraft will have landed and will be well clear of the runway before the next one comes in.”
    A lesson learnt at Tenerife, applied equally to aircraft taking off ...

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