81LL
Otterbach Farm Airport
VFR
US-3333
Chicago Police Marine Heliport
41° 53′ 14″ N 87° 36′ 35″ E
/
584 ft
(178 m MSL)
navigation
75°
40° 38′ 9″ N 88° 8′ 39″ E
/
704 ft
(215 m MSL)
navigation
140°
42° 3′ 53″ N 87° 41′ 4″ E
/
760 ft
(232 m MSL)
navigation
66°
navigation
254°
navigation
337°
42° 38′ 34″ N 88° 23′ 55″ E
/
840 ft
(256 m MSL)
navigation
28°
42° 3′ 42″ N 87° 40′ 26″ E
/
610 ft
(186 m MSL)
navigation
66°
navigation
27°
navigation
38°
42° 32′ 32″ N 88° 10′ 13″ E
/
750 ft
(229 m MSL)
navigation
37°
navigation
230°
42° 27′ 55″ N 88° 2′ 25″ E
/
805 ft
(245 m MSL)
navigation
43°
41° 32′ 5″ N 87° 31′ 46″ E
/
620 ft
(189 m MSL)
navigation
92°
navigation
227°
navigation
104°
41° 36′ 51″ N 87° 31′ 26″ E
/
624 ft
(190 m MSL)
navigation
88°
navigation
36°
41° 29′ 35″ N 87° 31′ 24″ E
/
727 ft
(222 m MSL)
navigation
94°
navigation
50°
41° 43′ 27″ N 87° 31′ 35″ E
/
598 ft
(182 m MSL)
navigation
83°
navigation
312°
41° 32′ 17″ N 87° 30′ 51″ E
/
617 ft
(188 m MSL)
navigation
91°
40° 20′ 49″ N 89° 28′ 14″ E
/
725 ft
(221 m MSL)
navigation
190°