.
Review the missed-approach procedure;
.
Confirm the timing from the FAF to the MAP (or to the VDP) or confirm the DME distance defining the VDP and/or MAP;
.
Confirm the navaids set-up (frequencies, courses, and identification);
.
Compute the expected ground speed;
.
Confirm the published vertical speed for the final descent segment or compute the target vertical speed, based on the published approach glide path and anticipated ground speed; and,
.
Confirm the use of the FD or of the flight path vector (as applicable).
During Descent:
. Check FMS navigation accuracy:
. Check that the FMS bearing/distance to a tuned VOR-DME and the RMI (ND) raw data agree within the criteria defined in the SOPs and confirm strategies for lateral and vertical guidance (i.e., FMS or selected guidance).
Before reaching the IAF / Holding fix:
.
Keep the AP engaged with FMS or selected modes for lateral navigation and vertical navigation, as desired;
.
Keep both navigation displays (NDs) in MAP mode (unless the FMS navigation accuracy is greater than 1 Nm);
.
If FMS lateral navigation mode is used:
. Check the FMS navigation accuracy level (e.g., R/I or HIGH or […], depending on the FMS type and standard);
. Check ND for correct flight plan and for correct TO WPT;
. Confirm the FMS NAV mode engagement on FMA; and,
.
Adjust the descent rate for reaching the IAF at the charted/prescribed altitude and planned airspeed;
.
Establish the desired configuration and speed:
. Clean configuration or slats extended; and,
Flying Constant-Angle Non-Precision Approaches
Page 5
. Adjust the weather radar gain and tilt, as applicable, for optimum use of radar capability (for weather avoidance and/or enhanced horizontal situational awareness).
Upon reaching the IAF or Holding fix:
.
If FMS lateral navigation mode will be used beyond the IAF or holding fix, keep both NDs in MAP mode;
.
If selected heading or localizer mode will be used to capture and track the final approach course:
. Set the PF ND to ARC mode or ROSE mode:
The PNF may keep the ND in MAP mode for situational awareness (i.e., with display of speed and altitude constraints).
During the holding pattern or when suitable:
. Configure the aircraft:
. Slats extended only or approach flaps; and,
. Associated maneuvering speed.
Exiting the holding pattern:
. Select the holding EXIT prompt; in order to allow the correct sequencing of the FMS flight plan.
Leaving the holding pattern:
. If FMS lateral navigation mode is not used, use the selected heading mode (or the track mode -as available) to intercept the final approach course, as follows:
. For an NDB approach, set the final approach course on the ILS course selector, this will set the ILS course pointer on the ND and provide a course reference,
. For a VOR or VOR-DME approach, set the final approach course on the VOR course selector but do not arm the VOR mode,
Capture and track the VOR course using the selected heading or track mode.
. For a LOC or LOC- DME approach, set the final approach course on the ILS course selector and arm the localizer mode,
Different procedures may apply depending on whether the desired ILS-DME is in the FMS database or not.
. Check and confirm the correct sequencing of the FMS flight plan:
. The TO WPT should be the FAF;
. If a TO WPT other than the FAF is displayed on the ND, perform a DIR TO [FAF].
Note : Ensuring the correct sequencing of the FMS flight plan is essential to be able to re-engage the NAV mode in case of go-around,
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