Q2.Flying an ILS approach with 3degree glideslope referenced to 50feet above threshold,an a/c at4.6nm should be at approximate height of:
use the formula:
note glideslope is referenced 50 ft above the threshold. but 3 deg takes you down to touchdown. hence you need to add 50 ft to the height obtained.
height (in feet) = distance(nm) * glideslope angle *101.3
= 4.6 * 3 * 101.3
=1397.94 ft.
hence height of the aircraft is 1397.94 + 50 =1447.9 ft.