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Please note that while you cannot navigate laterally using the pseudo waypoints
they will show on your ND using various symbols. If a pseudo waypoint is on the
second line of the flight plan it will be white even though it cannot be the TO
waypoint. The MCDU logic simply makes the second line white whether it is
actually the TO waypoint or not.
Also you will have some pseudo waypoints that show on the ND that are not on
the MCDU such as the Energy Circle and Crosstrack Error.
The Energy Circle (green dashed arc) is available only in Descent and Approach
phases. It shows how far the aircraft will go until reaching landing elevation in the
current configuration until 1500’ AGL then configure for landing and descend to
landing elevation. It is interesting to note that Flaps 1 provides longer range than
Flaps 0 (clean), this is due to the higher engine idle speed with Flaps 1.
Crosstrack Error will show how far the aircraft is from the active nav segment or
leg. This is very useful when cleared for approach or when cleared to join the
departure or arrival.
The Intercept Point will show as INTCPT on the course when on heading to join
the active nav leg.
US Airways Airbus A319, A320, A321 Notes
68
Initializing the FMGC
When initializing the FMGC during pre-flight use these pages to enter data:
DIFRS FP
D DATA
I INIT PAGE A, INIT PAGE B
F F-PLAN PAGE A, F-PLAN PAGE B
R RAD NAV
S SEC F-PLAN
F FUEL PRED
P PERF
Note: Allow at least 3 minutes after initial power up on a cold airplane for all
internal tests to be completed before pressing buttons.
DATA:
Press DATA key, then A/C Status. Check database validity and dates. Enter
BIAS from flight plan on PERF for performance factor on LSK 6R. New database
is effective at 0900Z on the date of change.
INIT Page A:
Press INIT key. Enter the city pair codes in FROM/TO. For example, for
Charlotte to Phoenix use KCLT/KPHX or use company route number such as
KCLTKPHX1.
Enter the alternate city code. Example: for Greensboro use KGSO.
Enter flight number. Type in USA followed by the flight number. For example for
flight 121 type USA121. Note: USA is just to help identify the flight number
Check lat/long coordinates. It is safer to use the airport coordinates from the
database as this avoids the pilot typing in gross errors that are not caught.
Cost Index. Enter 35.
Cruise flight level. Enter intended cruise altitude on the CRZ FL (350 for 35,000’)
and modify the anticipated cruise temperature with /TEMP (/–49 for minus 49).
US Airways Airbus A319, A320, A321 Notes
69
Press the ALIGN IRS key (LSK 3R). ALIGN IRS should be pressed within 15
minutes of turning GNADIRS to NAV to avoid excessive drift. DO NOT move
aircraft during align process.
INIT Page B:
Press the INIT key. Press the NEXT PAGE key. This will take you to the second
INIT page. Check that the reserve time is 45 min. on FINAL/TIME line.
F-PLAN Page A:
Press F-PLAN key to program the filed route. Do a lateral revision from the
departure airport. To do this press the LSK 1L on the left side of the MCDU next
to the departure airport code. Then select DEPARTURE. Now select RWY for
anticipated departure runway, then SID if needed and TRANS if needed.
Airbus Gotcha: Delete the pseudo altitude waypoint for the runway (not for
FMS departure routes). Be sure to leave a discontinuity between the runway and
the first fix (again, not if using FMS departure).
Insert first fix or waypoint in flight plan route. If there is victor or jet airway routing
from the fix then use a lateral revision to enter the needed airway. For example
for a route from BOS VOR on Jet 75 that ends at CMK press the left LSK next to
BOS in the flight plan. Now enter J75/CMK in the VIA/ GO TO. Then INSERT if
OK. Any fix that is a direct with no published route you can simply press on the
next line. For example to go direct from BOS to CMK simply press CMK on the
line below BOS LSK. This will place CMK after BOS in the flight plan as the next
fix.
Note: pressing a fix on top of a fix places the new fix ahead of the previous one
and a discontinuity is in between the two fixes now. You will need to clear the
discontinuity if you want to join the fixes to make a segment. To clear a
discontinuity press the CLR (clear) key and then press the LSK next to the
discontinuity. This will join the two waypoint on either side of the discontinuity.
Enter any vertical restrictions (cross LAX VOR at or above 10,000’) by typing the
altitude in the scratch pad and pressing it on the right LSK for that fix. You can
also enter a vertical revision by pressing the right LSK for that fix and putting it
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