Figure 17: Horizontal Situation Indicator (HSI)

O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 04 9 0 8 COURSE 1 8 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 04 9 0 8 COURSE 1 8 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 04 9 0 8 COURSE 1 8 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 05 9 0 8 COURSE 2 4 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 05 9 0 8 COURSE 2 4 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 05 9 0 8 COURSE 2 4 0 O F F 33 30 24 2I I5 I2 6 3 HEADING SET COURSE SET MILES 04 5 4 COURSE 1 8 0 1 2 3 4 5 6 UPPER LUBBER LINE Indicates magnetic heading of aircraft. BEARING POINTER Indicates magnetic bearing from aircraft to navigational aid selected. COURSE ARROW Indicates course set in Course Selector window. ROTATING COMPASS CARD Actuated by Master Compass system and rotates as the aircraft turns. HEADING MARKER Rotates with the Compass Card. Can be manually set with the Heading Set knob. TO/FROM INDICATOR Shows whether the course selected, if intercepted and flown, will take you TO or FROM station. COURSE SELECTOR WINDOW Selected course is read in this window. COURSE DEVIATION INDICATOR Shows position of selected radial in relation to aircraft. COURSE SET KNOB Used to select any desired course.