Basic ATPL QFE. question
I am not struggling with this and understand the differences etc, but just trying to make sense of an answer without the workings given.
According to the Met Handbook.... '1hPa change per 27ft of pressure change down to sea level"
The question goes something along the lines of
"If the QNH at Coventry (200 meters above sea level) is 1025 hPa, wha is the approximate QFE?"
My working is:
200/27 = 7.4 - round down to 7.
1025 - 7 = 1018 - A minus as the QFE would be lower than the QNH.
My answer QFE = 1018.
The answer however is 1000 HpA .
Just wondered if the mathematical derivation of this is using the above rule of "1hpa pressure change per 27ft"..
Not sure how this works out at 1000 HPa.