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Samuel James

atc-training Group OBS Session Dates

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Samuel James

Hi folks,

This thread will be used to announce upcoming dates and times for the next Group OBS sessions for New Controllers.

Invitations will be emailed to you based on waiting list seniority.

Hope to meet you all soon, and once again thanks for your patience!

Edited by Alex Beard
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      This has changed, and this post is no longer accurate. Since I find removing something several years old slightly strange I will let the original post remain below, but it is no longer correct!
      There has been a trend recently where a poor understanding of VMC minimas is shown. This is posted as a general reminder to all controllers of what the VMC minimas are and how to apply them. This post is based on MATS part 1,sec 1, chap 2, §4.

      The basic VMC minimas are affected by two things:
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      By night
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      For aircraft other than helicopters, CCSIS, 5km visibility
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      In aviation night is defined as half an hour after sunset to half an hour before sunrise, both times inclusive. Ie if sunset is 2010 and sunrise is 0542 night is from 2040 (2010+30 minutes) to 0512 (0542-30 minutes).

      You will notice that all VMC minimas refer to "flight visibility", this is the visibility from the flight deck. It is assessed by the commander. However the MATS pt 1 says:
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      If a METAR gives two visibility values the lowest one should always be used.
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      When we look at the cloud what we need to determine is if the pilot can stay at least 1000 feet away from cloud, while also complying with the low flying rules. This is a set of rules which I won't go into here but the one we're interested in is the 500 foot rule. This says that an aircraft has to be at least 500 feet away from obstacles, vessles, vehicles, persons, and structures.
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