TM 1-1510-218-10 3A-36 1.   Vertical speed – Reduce to approximately 500 feet per minute just before reaching cruise altitude. 2.   ALT    button     –    Press    when    cruise altitude is reached. j.    VOR Operation. (1)   Establishing  Aircraft  On  A  Desired  VOR Radial. 1.   VOR    receiver     –     Tune     appropriate frequency. 2.   COURSE knob, pilot's horizontal situation indicator – Set desired course to or from station in   COURSE window. 3.   HDG  knob,  pilot's  horizontal situation indicator – Set desired beam intercept angle   under   heading   marker.      The intercept   angle   with   respect   to   the radio  beam  may  be  any  angle  of  900 or less. 4.   NAV selector switch – Press.   Observe  that   NAV  ARM  annunciator lamp illuminates. 5.   NAV CAP annunciator lamp – Monitor.      At   point   of   capture,    NAV CAP annunciator lamp will illuminate. (2)   Changing   Course   Over   A   VOR   Station While  Operating  In  NAV  Mode  If  Course  Change  Is Less Than 30°. 1.   COURSE knob  – Set desired heading in COURSE window. (3)   Changing   Course  Over  A  VOR  Station While  Operating  In  NAV  Mode  If  Course  Change  Is Greater Than 30°. 1.   HDG   knob    –   Set   desired   intercept heading under heading marker. 2.   HDG selector switch – Press.   Observe  that   HDG  annunciator  lamp illuminates autopilot/flight director annunciator panel. 3.   COURSE knob   –  Set  new  course  in COURSE window. 4.   NAV selector switch – Press.   Observe  that   NAV  ARM  annunciator lamp illuminates. 5.   NAV CAP annunciator lamp – Monitor.  Illumination indicates capture of new radial.   k.   Front-Course Approach. 1.   VOR receiver – Tune appropriate frequency. 2.   COURSE    knob    –    Set    inbound    runway heading in COURSE window. 3.   HDG    knob    –    Set    heading    marker    to desired intercept angle. 4.   HDG  selector  switch   –  Press.    Observe that    HDG    annunciator    lamp    illuminates autopilot/flight director annunciator panel. 5.   Vertical mode – Select IAS, ALT, or pitch. 6.   APPR selector switch   –  Press.    Observe that NAV ARM annunciator lamp illuminates autopilot/flight director annunciator panel. 7.   NAV CAP annunciator lamp will illuminate when system has captured localizer course. 8.   GS  ARM  annunciator  lamp  will  illuminate to verify that system is armed for glideslope capture. 9.   GS  CAP  annunciator  lamp  will  illuminate and   all   vertical   modes   will   be   cleared, indicating autopilot is tracking glideslope. l.    Go-Around.    If  visual  runway  contact  is  not made   at   missed   approach   point,   execute   a   missed approach by performing the following. 1.   GO AROUND switch, outboard side of left power    lever    –    Press    while    increasing power to climb power setting and observe the following. a.   GA annunciator lamp on autopilot/flight director annunciator panel illuminates. b.   Autopilot is disengaged. c.   Command    presentation    is    given    on pilot's   horizon   reference   indicator   for