Attachment 18
Figure A18.2. Minimum Eye-Level Determination.
Ee
H
CONTROL
0o
35'
TOWER
END OF RUNWAY
LOCATION
OR AIRFIELD
TRAFFIC
Gs
Eb
SURFACE
D1
Given:
E as = 30.5 m (100') MSL E b = 32.3 m (106') MSL
D 1 = 1,828.8 m (6,000')
G s = +2 min
Find E e :
E e = 30.5 m (100') + H
= 30.5 m (100') + (1,828.8 m (6,000') x tan (35 min + 2 min))
= 30.5 m (100') + (1,828.8 m (6,000') x 0.01076)
= 30.5 m (100') + 19.7 m (64.6')
= 50.2 m (164.6') MSL
Required Eye Level Height = E e - E b = 50.2 m (164.6') - 32.3 m (106.0') = 17.9 m (58.6')
A18-4
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