MULTI PHASE
NAVIGATION management & monitoring
49
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00
PREDICTIVE GPS function
This function enables interrogation of
the onside GPS receiver, to check
availability of Receiver Autonomous
Integrity Monitoring (RAIM):
− At DEST during the period between
ETA ± 15 min,
− At any specified WPT and time,
during a period of ± 15 min,
− If RAIM is predicted to be available,
GPS may be used as a PRIMARY
means of navigation for arrival at
DEST, or at the specified WPT and
time,
− PREDICTIVE GPS is accessed from
PROG page.
PROG key ...................... Press
PREDICTIVE GPS [5L] ... Press
PREDICTIVE GPS page is displayed.
DEST [1L] and associated ETA [1R] as
defined in ACTIVE F-PLN.
[Line 2] shows predicted status at
DEST at 5 min intervals during the
applicable period: Y means "Yes"
(primary available), N "No" (primary
not available).
− If predicted status is required at a
specific WPT:
Ex. EHAM.
WPT [3L]........................Enter
Any WPT, NAVAID, RWY or Airport in
NAVdb, or defined by pilot, may be
inserted.
The entered WPT may be changed by
overwriting, or cleared.
ETA field [3R] then shows amber
boxes.
ETA for a WPT in existing ACTIVE F-
PLN is not automatically entered, and
must be inserted manually.
ETA [3R].........................Enter
Ex: 1710.
Predicted GPS status is then computed and displayed.
PREDICTIVE GPS
DEST ETA
EGLL PRIMARY 1625
-15 -10 -5 ETA+5 +10 +15
Y Y Y Y Y Y Y
WPT ETA
EHAM PRIMARY ____
-15 -10 -5 ETA+5 +10 +15
DESELECTED SATELLITES
[]
1710
PREDICTIVE GPS
DEST ETA
EGLL PRIMARY 1625
-15 -10 -5 ETA+5 +10 +15
Y Y Y Y Y Y Y
WPT ETA
EHAM PRIMARY 1710
-15 -10 -5 ETA+5 +10 +15
DESELECTED SATELLITES
[]
PREDICTIVE GPS
DEST ETA
EGLL PRIMARY 1625
-15 -10 -5 ETA+5 +10 +15
Y Y Y Y Y Y Y
WPT ETA
[ ] PRIMARY
-15 -10 -5 ETA+5 +10 +15
DESELECTED SATELLITES
[]
EHAM
CRUISE THV001
CRZ OPT REC MAX
FL360 FL361 FL389
<REPORT
UPDATE AT
*[ ]
BRG /DIST
356° /337.4 TO EGLL27R
PREDICTIVE
<GPS GPS PRIMARY
REQUIRED ACCUR ESTIMATED
2.0NM LOW 0.08NM
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