Table 3C-68. Tactical Approach Selection
Select the tactical approach page.
Define the approach as desired.
Enter a FAF.
Enter a MAP.
Enter the desired glideslope into the
Enter the Runway Elevation mean sea
level for the MAP.
Insert the approach into the flight plan.
(a) To change the FAF displayed on line
1, type in a valid waypoint in the scratchpad and press
line select key 1 or 5. To copy the waypoint displayed
on line 1 into the scratchpad, press line select key 1 or
5 when the scratchpad is blank. To delete the
waypoint indicated on line 1, enter a in the
scratchpad and press line select key 1 or 5.
(b) To change the MAP, type a valid
waypoint in the scratchpad and press line select key 2
or 6. To copy the MAP into the scratchpad, press line
select key 2 or 6 when the scratchpad is blank. To
delete the MAP, enter an * in the scratchpad and press
line select key 2 or 6.
glideslope is 3.0° and is automatically displayed at line
select key 3 when the Tactical Approach page is
displayed. To change this value, enter the desired
value (0 to 6.0°) into the scratchpad and press the line
select key 3. To change the runway elevation, type a
valid elevation in the scratchpad and press the line
select key 2 or 6.
(d) To insert the tactical approach into
the flight plan, select the FPLN INSR line select key.
The Flight Plan page will be displayed and the
message, INSRT VAPR BEFORE?, will appear in the
scratchpad. Press the line select key next to the
desired waypoint to insert the approach at that point.
(e) If one or more of the FAF, MAP, or
runway elevation parameters are missing, an attempt
to insert the approach will result as an ENTER
PARAMETERS message in the scratchpad.
(9) Deleting or Changing the FMS Approach.
Once an FMS Approach of any type is in the flight
plan, it may be deleted or replaced with a different
approach. Access the FMS Approach pages via the
EDIT key to access a working copy definition of the
approach or press the A or F attribute line select on
the Flight Plan Waypoint page for the MAP or FAF
waypoint to access the current flight plan definition.
Select the desired approach in the working copy
approach definition and select FPLN MOD. When the
working copy replaces the existing approach, the
existing approach is discarded. To remove the current
approach procedure from the flight plan, access the
current approach definition and select FPLN RMV.
(10) Approach Guidance and Leg Advance
(Tactical/Visual Approach). Once an approach is
defined, the sequencing from EN ROUTE to
APPROACH guidance is automatic. When the aircraft
is within 30 nm of the FAF or runway extension point,
the HSI lateral deviation display scaling switches to
BAROSET, reminds the pilot to enter the reported
local barometric pressure setting for the airport of
landing. For a tactical or visual approach, the HSI
APPROACH mode and the flight plan switches from
automatic (AUTO) to manual (MAN) sequence mode
upon arriving at the FAF or runway extension point.
Refer to Figure 3C-91.
(11) Published GPS Approach Guidance and
Leg Advance. If the approach is a published GPS
approach, the approach sequence is somewhat
different from the tactical or visual approach, as shown
in Figure 3C92.
annunciation on the CDU flashes when the distance is
2 miles from the FAF, to alert the pilot of the transition
to approach. The APPROACH annunciation is then
displayed steadily during the approach. At 2 miles
from the FAF, the HSI deviation scaling transitions
linearly from 1.0 nm full scale (TERMINAL) to 0.3 nm
full scale (APPROACH) at the FAF and the GPS
approach integrity performance is activated.