Altimetry Flashcards
1
Q
What is the change of height per 1 hPa at:
(a) MSL
(b) FL180
(c) FL390
?
A
(a) 27 ft
(b) 50 ft
(c) 105 ft
2
Q
What FL corresponds to the pressure level of:
(a) 1013 hPa
(b) 850 hPa
(c) 700 hPa
(d) 500 hPa
(e) 300 hPa
(f) 200 hPa
?
A
(a) MSL
(b) FL50
(c) FL100
(d) FL180
(e) FL300
(f) FL390
3
Q
What percentage of the total mass of the atmosphere exists between MSL and:
(a) 5.5 km
(b) 16 km
(c) 100 km
?
A
(a) 50 %
(b) 90 %
(c) 100 %
4
Q
Can QNH, QFE, and QFF be the same?
A
Yes, if measured at MSL.
5
Q
How does altitude vary as temperature changes?
A
It varies by 4% for every 10° of ISA deviation.
6
Q
How to calculate QNH from QFE and elevation?
A
QFE + (ELEV/27)
