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The wind arm is useful if you are using it "for real" but can get in the way for some exam calculations. If you can work ok with it then leave it on. Otherwise cut it off . Dismantling the CRP 5 to remove it might cause you more problems. The new CRP5s all seem to come with the wind arm....
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I've found the page now (1.3) I always use a calculator for these problems it's by far the easiest way.
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I'm afraid I cannot find the example you are referring to in either the current BGS paper notes or the ATP digital course. Which version are you referring to ?
Nevertheless, if you use a calculator like the Casio fx 85 to perform the calculation you will get the correct answer.
...
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Each of the four diagrams shows the same two isohypses at latitude 45 degrees south.
An isohypse, or height contour, represents the distance from zero geopotential metres that a certain pressure is found. Geopotential assumes that the earth is perfectly flat and perfectly round. However...
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Density altitude is the altitude in the standard atmosphere (ISA) at which the air density at the place of observation would be found. It can also be considered as the pressure altitude adjusted for nonstandard temperature. An increase in temperature at any given location will cause an increase in...
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Hi Brad
The quiz at the end of the plotting section refers to Annex 06112621.
The Annexes for the symbols in PT 08 are 098061003 and 098061005.
I'm not sure why these do not show up against the question on the picture you posted  they do on my copy of ATP Digital....
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Hi
The convergency between Heathrow and St John's is 58 degrees (change in longitude rounded down ) times the sine of the mean latitude ( sine 50 =.766).
So convergency is 44 (rounded down).
Conversion angle is therefore 22.
GCT is 279 degrees and the RLT is less than this by...
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