36 18 O B S N E S W 3 33 24 21 15 12 30 6 33 30 24 2I I5 I2 6 3 CRS 180° HDG 330° LOC1 330 ° As you begin procedure turn,  course needle shows  divergence from course  centerline increasing. B C While on the procedure turn  inbound the course needle  becomes directional. Start the turn to final approach  course when the needle  comes alive (needle moves  away from side) and is  moving toward center. O BS N E S W 3 33 24 21 15 12 30 6 33 30 24 2I I5 I2 6 3 CRS 180° HDG 135° LOC1 135 ° OBS N E S W 3 33 24 21 15 12 30 6 NAV GS Instrument view is from  the pilot’s perspective,  and the movable card is  reset after each turn OBS N E S W 3 33 24 21 15 12 30 6 33 30 24 2I I5 I2 6 3 Maintain course with the  needle centered. CRS 180° HDG 180° LOC1 180 ° D CRS 180° HDG 350° LOC1 350 ° OBS N E S W 3 33 24 21 15 12 30 6 33 30 24 2I I5 I2 6 3 As you fly northbound of the  instrument runway (in this case  Localizer 18), with the radio  tuned to the Localizer  frequency (and identified), the  course needle is not directional.  Correct left to center the course  needle. A E A D B C FAF Localizer inbound  course is 180° As you fly a missed approach  along the back course, the  needle, indicating “fly left” is  directional.  In this case fly left to get on  course. OB S N E S W 3 33 24 21 15 12 30 6 33 30 24 2I I5 I2 6 3 CRS 180° HDG 180° LOC1 180 ° E Figure 9-38. Localizer course indications. To follow indications displayed in the aircraft, start from A and proceed through E. 9-41