MCDU Progress Page – Description #
MCDU Progress page displays flight data for the current phase of flight.
It allows pilots to update FMGS position in flight, and provides FMGS computed bearing/distance information to any waypoint.
MCDU Phase of Flight
The phase of flight is indicated as a title at the top of the page.
The flight number (i.e. 1127) is entered via INIT page A and indicated to the right of title.
MCDU – CRZ #
CRZ Displays cruise altitude as entered on INIT page A or as entered directly into this field by the pilot, or as automatically entered when the alternate is enabled.
If an altitude is selected in the FCU that is above the current cruise altitude, the CRZ altitude on the PROG page automatically updates to the new FCU altitude when the climb is initiated.
If, after reaching the cruise altitude the, FCU altitude is reset below the current cruise altitude and the airplane is more than 200 NM from the destination and the FCU altitude is set above the higher of FL 200 or the first descent altitude constraint, the CRZ altitude on the PROG page automatically updates to the new FCU altitude when the descent is initiated.
Anytime the CRZ altitude is automatically changed, NEW CRUISE ALTITUDE XXX displays in the MCDU scratchpad. An altitude lower than the current FCU altitude cannot be inserted directly into this field.
Progress Page – OPT #
Displays the most fuel-efficient altitude for ECON CRZ speed based on gross weight, cost index, and temperature, using 500-foot increments and a minimum of 5 minutes cruise.
Does not account for cruise winds (see appropriate Recommended Step Climb chart in the Cruise Performance chapter).
If a selected speed other than ECON CRZ is being flown, OPT is not valid.
Progress Page – REC MAX #
Based on gross weight, center of gravity, and temperature. The recommended maximum altitude is the highest altitude at which the airplane can:
- Maintain a 0.3g buffet margin
- Fly in level flight at max cruise thrust
- Maintain a vertical speed of 300 FPM at climb thrust
With an engine out, it displays the recommended maximum EO altitude, computed for long range cruise speed at max continuous thrust and anti-icing off.
MCDU – Report Page #
Report selects Report page
The REPORT page may be useful for ATC position reporting, if the TO waypoint matches the next compulsory reporting point on the orientation chart.
Progress Page – Update At #
Only used to update position in the event of a large navigation error. Allows pilots to update the airplane position over a known position/navaid by entering a waypoint in the brackets. After an entry, a small font CONFIRM UPDATE AT prompt displays above the entered or computed LAT/LONG, and an asterisked waypoint identifier also displays for pilot confirmation.
If a waypoint is incorrectly entered, do not select the CONFIRM UPDATE AT prompt or attempt to CLR. Another page (e.g., flight plan, RADIO NAV, etc.) must be selected to cancel the update.
When the CONFIRM UPDATE AT prompt is selected, the FMGC position is updated to the displayed LAT/LONG and brackets redisplay to allow another update.
CAUTION: Large navigation errors may occur when the CONFIRM UPDATE AT prompt is improperly selected.
Predictive GPS Page #
Selects the Predictive GPS page.
DEST – Displays current destination.
Predictive GPS – Predicts availability of the GPS within ±15 minutes of ETA at destination or any waypoint entered by the pilots. Predictions display for time intervals of 5 minutes.
WPT – Allows entry of a waypoint that is not the destination. Once entered, an ETA must be manually entered in the UTC data field. The FMGC will provide predictive GPS status for the designated waypoint based on the entered time.
Time to Destination – Displays current predicted time to destination.
Required Accuracy #
Displays the accuracy required in the current area of flight (enroute, terminal, or approach).
This value normally changes automatically, but may be inserted by the pilot.
Estimated Accuracy #
Displays the FMGC’s statistical assessment of its own navigation accuracy.
Vertical Deviation #
Displays vertical deviation (±) from the descent profile when NAV is engaged or HDG is engaged and the airplane’s crosstrack from the flight plan route is less than 4 NM. The vertical deviation is the airplane’s position relative to the descent profile.
Bearing and Distance #
Displays the FMGS computed bearing and distance from the present position to any waypoint, including airports (KIAD), runways (KIAD01R), VORs, etc.
The BRG/DIST calculation is updated every 2 seconds.
