TM 55-1510-219-10 h. Automatic Approach Front Course. NOTE The   localizer   and   glideslope   are   captured automatically     on     the     ILS     front     course approach.    The  localizer  must  be  captured before  glideslope  capture  can  occur.    The localizer is always captured from a selected heading, but the glideslope may be captured from   any   of   the   vertical   modes   and   from above    (not    recommended)    or    below    the glideslope. 1.    VOR     receiver     Tune     appropriate frequency. 2.    COURSE    knob    (pilot's    HSI)    Set inbound runway heading in COURSE window. 3.    HDG knob (pilot's HSI) Set heading marker to desired intercept angle. 4.    HDG    selector    switch    (AP    mode select panel) Press.  (Observe HDG illuminates on AP/flight director annunciator panel). 5.    Vertical    mode    (AP    mode    select panel) Select IAS or ALT. 6.    APPR     switch     (AP     mode     select panel)  Press.    (Observe  NAV  ARM illuminates on AP/flight director annunciator panel). 7.    NAV CAP (AP/flight director annunciator panel) -Observe illumination (when capture of localizer course is achieved). 8.    GS ARM (AP/flight director annunciator panel) -Observe illumination (when autopilot is armed for glideslope capture). 9.    GS CAP (AP/flight director annunciator panel) -Observe illumination  (which  confirms  that  all vertical modes are cleared, and also confirms   that   autopilot   is   tracking glideslope). i. Go-Around.      If   visual   runway   contact   is   not made at decision height, go-around may be activated by pressing the GA button on the left power lever, and may be  initiated  from  any  lateral  mode  (HDG,  NAV,  APPR, B/C) with the following results: 1.    Illuminates    GA    light    on    autopilot annunciator panel. 2.    Disengages autopilot. 3.    Pilot's HRI shows command presentation  for  wings  level  and  7° nose up climb attitude. NOTE The  heading  marker  may  be  preset  to  go- around heading after the localizer is captured.      After   go-around   airspeed   and power  settings  are  established,  selection  of the   HDG   mode   will   clear   the   go-around mode.  Pitch attitude will remain at that used for go-around until changed with the PITCH SYNC  &  CWS  button  or  by  selection  of  a vertical mode. j. Back   Course   Approach.      As   in   front   course approach,  the  localizer  is  captured  automatically.    The aircraft  should  be  maneuvered  into  the  approach  area by  setting  the  heading  marker  and  functioning  in  the HDG mode. 1.    VOR   receiver   (NAV   panel)   Tune localizer frequency. 2.    COURSE    knob    (pilot's    HSI)    Set front course inbound runway heading in COURSE window. 3.    HDG knob (pilot's HSI) Set heading marker to desired intercept angle. 4.    HDG switch (AP mode select panel) Press. (Observe HDG lamp illuminates on AP/flight director annunciator panel). 5.    B/C  switch  (AP  mode  select  panel) Press.    (Observe  BACK  LOC  and NAV ARM lamps illuminate (AP/flight director annunciator panel)   indicating   system   is   armed for back localizer capture. 6.    NAV CAP lamp will illuminate when system  has  captured  back  localizer course. 7.    PITCH  control  (AP/pitch-turn  panel) Use to establish and maintain desired rate of descent. NOTE The  HDG  mode  should  be  used  within  one mile  of  the  runway  due  to  the  large  radio deviations encountered when flying over the localizer transmitter. 3-41