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    Re: Magnetic variation changing faster than anticipated
    From: David Pike
    Date: 2019 Feb 26, 14:02 -0800

    DavidC you wrote:

    One thing puzzles me. Why would it have taken a week to repaint the runway numbers?

    I expect it’s because as with everything in Aviation, it has to be done properly to laid down standards such that it’s become a science.  You can do no better than to ‘Ask Google’.  Google threw up this http://www.iprf.org/products/Final%20Report%2005-1.pdf .  If you go the ‘Find’, type in ‘time’, and follow it through, you’ll soon see what I mean. DaveP   

       
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