Figure 3-21.  A comparison of navigation information as depicted on both analog and digital displays.  3300 Figure 3-22.  Analog and digital indications for glideslope interception.  3-16  O B S  N  E  S  W  3  33  24  21  15 12  30  6  TO  30  33  2I  24 I5 $^{I2 }$ 6  3  2 30  33  24  2I I2  I5  3  6  O B S  N  E  S  W  3  33  24  21  15 12  30  6  TO  1 160 °  3  33  24  21 15  12  30 6  A 2 The aircraft illustrated is heading  020°, but the course is to the left.  020 °  HDG  360°  CRS  340°  VOR 1  1 Present position, inbound on 160° radial.  340 °  N  HDG  360°  CRS  340° GS  NAV  W E  OBS  S  View is from the pilot’s  perspective, and the  movable card is reset  after each turn.  4400 4300 4200 4100 4000 3900 3800 3600 3500 3400 3300 3200 3100 20 80 4000 4400 4300 4200 4100 4000 3900 3800 3600 3500 3400 20 80 N  E  S  W  3 33  24 21 15  12  30  6 N  E  S  W  3 33  24 21 15  12  30 6 25  Glideslope  Fly down  Fly up Glideslope needle indicates “fly  Glideslope needle indicates “fly up” to intercept glideslope  down” to intercept glideslope  TO  TO  2 0  I 0 2 0  I 0  I0 I0  I0 I0  20  20  FR  20  20  FR  NAV 1  NAV 1  OBS OBS