Opinion on Sample Question on Altimetry
An aircraft flies from aerodrome "A", where the QNH is 1020 mb, to aerodrome "B" where the QNH is 999 mb. Aerodrome "A" is 800 feet above mean sea-level and Aerodrome "B" is 500 feet above mean-sea level. If the altimeter sub-scale is not changed from 1020 mb, what will be the altimeter indication on landing at Aerodrome "B"?
a. 1430 ft
b. 130 ft
c. 1130 ft
d. -130 ft
This question is straight out of the PPL Series Book #4 on Meteorology. In Chapter 6: Altimetry Questions #6 on page 84.
My answer is D. -130 feet. The answer key in the book says C. 1130 feet.
I am having trouble understanding this and would like to hear your thoughts on this question.
Thank You