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Old 25th Jun 2003, 19:02
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iainpoll
 
Join Date: Mar 2002
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Formerley Bloke in a formerly Archer type Altissimus, known hereafter purely as

As I understand it, they do not include a temperature subscale (although I'm not even sure it is possible, thinking about the internal workings of an altimeter) because the temperature deviation affects all aircraft equally, and is only large enough to be an issue at height. 4% of 100 ft is not a lot, but 4% of 30,000 ft is....

Large aircraft on instrument approaches do take this correction into account when, although I think they just add 50ft to the decision height. Perhaps FFF could elaborate 'cause I have not got to that bit yet!

Are you coming on the 5th by the way?
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