7.3.5.6 Using the LNAV and VNAV modes
Prerequisite
Following the steps as described in the section about flight preparations, a flight route has been
defined on the RTE page of the FMS.
The autopilot modes to execute the flightplan are LNAV and VNAV.
Activate the LNAV mode:
|
Step |
Action |
|
1 |
The aircraft is flying with activated autopilot. |
|
2 |
Press the LNAV button: |
|
3 |
The aircraft will immediately start turning towards the first waypoint. At the same time, the cruise speed from the flightplan will be set as target speed. |
|
4 |
The LNAV mode can be terminated at any
time by pressing the HDG / TRK HOLD button, which will activate the basic
modes TRK, SPD and ALT. The current track over ground, speed and altitude
will be taken as target values for these modes. |
Activate the VNAV mode:
|
Step |
Action |
|
1 |
The aircraft is flying with activated autopilot and the LNAV mode has already been activated. |
|
2 |
Press the VNAV button: |
|
3 |
The aircraft will immediately start climbing (or descending) in order to reach and capture the defined cruise altitude. |
