OPERATIONS MANUAL

Automatic Flight
MCP:
Localizer switch
Push If LOC mode is armed:
Disarms LOC mode.
If LOC is not armed and not engaged:
Arms LOC mode.
Armed LOC mode will automatically engage when aircraft
intercept track is within 120° of localizer course and when
relation between intercept track, localizer deviation, and
groundspeed is adequate for timely localizer capture.
When armed or engaged, switch light illuminates and PFDs
annunciate LOC in white (armed) or green (engaged).
When LOC is engaged, AFDS commands roll to follow
localizer course.
Approach switch
Push If LOC and G/S modes are armed:
Disarms LOC and G/S modes.
If LOC is not armed and not engaged:
Arms LOC mode.
If G/S is not armed and not engaged:
Arms G/S mode.
Switch light illuminates when G/S is armed or engaged. LOC and G/S are
annunciated on PFDs in white (armed) or green (engaged).
Armed LOC mode will automatically engage when aircraft intercept
track is within 120° of localizer course, and when relation between
intercept track, localizer deviation, and groundspeed is adequate for
timely localizer capture.
Armed G/S mode will automatically engage when aircraft intercept track
is within 80° of localizer course and aircraft has captured the glideslope.
Either the localizer or the glideslope may be captured first.
If any autopilot is engaged, arms other two autopilots (illuminating
all CMD lights) for automatic engagement which will occur when the
aircraft is below 1500 ft radio altitude and the LOC and G/S modes are
engaged.
When LOC is engaged, AFDS commands roll to follow localizer course.
When G/S is engaged, AFDS commands pitch to follow glideslope.
When LOC and G/S are engaged, modes can be disengaged only by
pushing a TO/GA switch, or by disconnecting all autopilots and setting
both F/D switches to OFF.
— Page 141 —
For preview only. Not for sale. Many pages are intentionally removed.