Radio Navigationeasy#1131
ILS localizer signal reliability is protected within a sector of:
A
10 degrees either side of centerline
B
90 degrees either side of centerline
C
35 degrees either side of centerline
CorrectD
5 degrees either side of centerline
Explanation
ILS localizer course information is reliable within 35 degrees either side of the runway centerline out to 17 NM, and within 10 degrees out to 25 NM.
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