(6)
New Destination This revision is used to designate a new destination (airport ident entry) and it is available at any waypoint except the FROM waypoint and destination and waypoints beyond destination. A discontinuity is strung between the revise point and the new destination and all waypoints following the revise point are deleted (including primary destination and missed approach). When a new destination is entered, a temporary F-PLN is created.
MCDU Mechanization (Sheet 1/3)
Figure 032
MCDU Mechanization (Sheet 2/3)
Figure 033
MCDU Mechanization (Sheet 3/3)
Figure 034
Next Waypoint
Figure 035
(7)
Offset (Ref. Fig. 036) The parallel offset function enables the aircraft to fly parallel to the original F-PLN laterally offset by a certain distance (input by the pilot). This revision is allowed if the revised point is the FROM waypoint and if the following conditions are all met:
-
the active leg is a CF, TF or DF leg
-
the leg following the active leg is a CF, FM or TF leg
-
the active and next leg termination waypoints are not the
destination runway or MAP in the active F-PLN. An offset distance entry is accepted if the A/C current distance to go is greater than or equal to the distance required to reach the offset path. If the entry is not accepted, the ENTRY OUT OF RANGE message is displayed on the MCDU. When an offset is inserted, a temporary flight plan is created but the temporary F-PLN page is not automatically displayed, the display remains on a simplified LAT REV page. When the offset is inserted, OFST is displayed in the title line of the F-PLN pages. The offset is automatically cancelled when:
-
the next leg is not a CF, TF or FM leg or the next leg termination waypoint is the destination waypoint, and the current distance to go is less than or equal to the distance required to reach the path
-
the active leg is changed by a lateral revision.
The offset can be cancelled on the MCDU by zeroing or clearing the
offset distance on the LAT REV page.
When an offset is flown, the ND displays the original flight plan in
green dashed line and the offset flight plan in green solid line.
When an offset is flown, the ND displays the original flight plan in
green dashed line and the offset flight plan in green solid line.
(8)
Holding Pattern (Ref. Fig. 037) This function is used to insert a holding pattern with a manual termination (HM leg) into the flight plan, to convert an HF or HA leg into an HM leg, or to change the parameters of an existing HM leg. This function is only accessed if the revise waypoint is a fixed waypoint (other than a terminating waypoint of an HF leg), the FROM waypoint, or the manual termination of an HM leg. This revision may be performed through a specific page accessed from LAT REV page and creates a temporary flight plan. When a present position holding pattern is inserted, a discontinuity is inserted following the holding.
Offset
Figure 036
Holding Pattern
Figure 037
If the revise waypoint is the manual termination of an HM leg or the termination of the leg prior to an HM leg, the defining parameters of that holding pattern can be reviewed and/or changed. If that holding pattern is the active leg, a temporary is created and any inserted change (INSERT must be pressed again) becomes effective upon the next crossing of the holding fix. Otherwise (not active leg), changes (after INSERT is pressed on temporary page) are activated immediately. When the HOLD page is accessed, if no holding exists, a default holding is created and holding parameters are displayed in yellow (temporary page). If the holding belongs to the F-PLN, existing holding parameters are displayed in cyan (modifiable). HOLD pages display the following parameters :
-inbound course (course to holding fix)
-turn direction (right or left)
-time/distance of a leg of the holding pattern
-the time by which the holding pattern must be exited to satisfy the fuel reserve requirements and the estimated fuel on board at that time.
(9) VIA/GO TO (Ref. Fig. 038) This function allows selection of a prestored airway segment for insertion into the flight plan. This segment is defined by the airway identifier (VIA) and an end-point ident on that airway (GO TO). This end point cannot be a runway. There is no dedicated page for this function. This revision creates a temporary flight plan and is available if the revise point is a fixed waypoint in the F-PLN (except FROM waypoint and destination). If the entered airway does not pass through the revise point or if the entered end point is not on the airway, then a message is displayed on the MCDU to warn the pilot (AWY/WPT mismatch) and insertion is not allowed. If the entered end point is a down path waypoint in the original F-PLN, then the legs in the original F-PLN between the revise point and the end point are deleted and there is an automatic stringing. If not, there is a flight plan discontinuity between the end point and the first waypoint in the F-PLN past the revise point.
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