Copyright D.P. Browne 2011
Navigation Data
The bottom of each progress page shows the Required accuracy, accuracy state and estimated accuracy for the FM position.
Prompts
Update Facility
REPORT
GPS
Calls up the Report page
This prompt allows access to the GPS data page
The flight crew may update the FM position using this facility. It will re initialize the FMGC position to that of the waypoint entered at the time when the LSK 3R is pressed.
The required accuracy varies dependant upon the flight phase.
The accuracy state indicates the navigational accuracy of the FMGS. This may be “HIGH” or “LOW”.
The estimated accuracy value displays the current estimated navigation accuracy (EPE) as computed by the FMGS
The waypoint identifier is written in the scratchpad and then selected into the update line using LSK 3L .
When the aircraft is overhead the waypoint, the flight crew may press LSK 3R to initialize the FMGC position.
This is not a highly accurate position set, so the flight crew should use this facility with caution, especially if the aircraft is traveling at a high ground speed.
Progress Page
Select a new cruise flight level
Crosscheck the FM navigation accuracy
Update the FM position
The Progress Page is accessible from the direct access keys. .
The progress page is a multifunction page that enables the flight crew to do the following :