Thales FMGS - Approach Management; Vdev; Vertical Deviation Symbol

FLIGHT PHASES
APPROACH 11
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00
7.4. APPROACH MANAGEMENT
 VDEV
 Vertical Deviation symbol
The vertical deviation from the
theoretical vertical profile
computed by the FMGC is
displayed in the following
conditions:
− NAV mode engaged or HDG
mode with XTK lower than
4NM, and
− FMGC in DESCENT or
APPROACH phase.
VDEV is shown:
− On MCDU PROG page in
field [2R],
If conditions not met for
display the field is blank.
− On PFD by a magenta
circle.
The range is ± 500 ft.
If VDEV greater than ±500
ft, symbol stays at upper or
lower range limit; PROG
page displays exact value.
If conditions not met for
display the symbol is not
shown.
ILS approach
When established on GS, VDEV
remains available on PROG
page, magenta circle is no
longer displayed on PFD.
APPROACH THV001
CRZ OPT REC MAX
----- ----- FL393
<REPORT VDEV= 0FT
UPDATE AT
*[ ]
BRG /DIST
333° /7.7 TO EGLL27R
PREDICTIVE
<GPS GPS PRIMARY
REQUIRED ACCUR ESTIMATED
0.3NM HIGH 0.08NM
APPROACH THV001
CRZ OPT REC MAX
----- ----- FL393
<REPORT
UPDATE AT
*[ ]
BRG /DIST
295° /19.9 TO EGLL27R
PREDICTIVE
<GPS GPS PRIMARY
REQUIRED ACCUR ESTIMATED
1.00NM HIGH 0.08NM
APPROACH THV001
CRZ OPT REC MAX
----- ----- FL393
<REPORT VDEV=+ 330 FT
UPDATE AT
*[ ]
BRG /DIST
274° /15.4 TO EGLL27R
PREDICTIVE
<GPS GPS PRIMARY
REQUIRED ACCUR ESTIMATED
1.00NM HIGH 0.08NM