Federal Aviation Administration, DOT Section 171.313 (1) Horizontally within a sector Section40 degrees about the runway centerline originating at the back azimuth ground equipment antenna and extending in the direction of the missed ap- proach at least to 20 nautical miles from the runway stop end. The minimum proportional guidance sector must be Section10 degrees about the runway centerline. Clearance signals must be VerDate Sep<11>2014 08:20 May 17, 2019 Jkt 247048 PO 00000 Frm 00881 Fmt 8010 Sfmt 8010 Y:\SGML\247048.XXX 247048 EC15SE91.016 871