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  • JJ Jones
    replied to Question on Longitude
    The departure is 6 NM. Departure = Change in longitude in minutes x cosine of the latitude.

    The change in longitude in minutes is therefore the departure DIVIDED by the cosine of the latitude (not multiplied by it).

    So 6NM Divided by Cos 58o33' (0.522) = 11.5 minutes
    ...
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  • JJ Jones
    replied to Question ID: 500688
    I think we are to assume that they are asking what wind direction should be expected at point B NOW. There is no reference to any time in the future. The use of the words "will occur at Point B" should be changed to "would be expected at Point B" and i will change the question to...
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  • JJ Jones
    replied to Change of Latitude.
    Hi Mauro
    Remember that there are 60 minutes of angle in 1 degree. So if we just took the 37 minutes away from 87 degrees 13 minutes we would get 86 degrees and 36 minutes . Taking the 26 degrees away next would give us 60 degrees and 36 minutes.
    By far the best way to do these calculations...
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  • JJ Jones
    replied to Pressure decrease with height
    For Met altimetry questions use 27 feet per hPa unless told otherwise.
    For Gen Nav use 30 feet per hPa unless told otherwise.
    These figures are promulgated in the Learning Objectives. Hopefully EASA will standardise at 30 feet in the future!!...
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  • JJ Jones
    replied to Dead reckoning
    I'm not too sure what you are asking. The CX2 electronic flight computer is not allowed in the EASA examinations ( although I believe it is allowed by the FAA and Canadian authorities). BGS course work covers the use of the non-electronic CRP-5 flight computer and its use is dealt with in depth during...
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  • JJ Jones
    replied to Question ID: 500170
    Cut and paste not working for paragraph c onwards- but you can get all the Learning Objectives from the BGS web site or by googling the reference in my post above.
    EASA will probably standardise on 30ft in the future but until then I'm afraid it is27ft for Met and 30 ft for Gen Nav unless told...
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  • JJ Jones
    replied to Question ID: 500170
    Confusion is due to the different specifications in the Learning Objectives for Gen Nav and Met. The relevant sections from Annex II to ED 2016/008/R are:

    061 04 05 01 Calculation of altitude, adjustments,
    corrections, errors
    Remark: For questions involving height
    calculation,...
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JJ Jones
JJ Jones
BGS Instructor
Joined: 24-10-2014
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