MULTI PHASE
FUEL monitoring 5
CRZTEMP/TROPO [4R]
The CRZTEMP field is identical to the CRZTEMP field on INIT page A.
When T/C is sequenced, CRZTEMP is dashed and entry is not allowed.
Default value for Tropopause is 36090; it may be modified by pilot.
Pilot entry may be cleared and field reverts to default value.
Default value cannot be cleared.
Until engine start, all FUEL PRED page fields are dashed and no entry is
accepted (except 3R and 4R).
Fuel to Divert and EXTRA/TIME
The minimum FUEL to divert is not directly displayed on any MCDU
page.
Trip Fuel for alternate is the difference between EFOB at DEST [2R]
and EFOB at ALTN [1R], based on ALTN route entered in the
ACTIVE F-PLN.
Consequently if no RTE has been entered, FMS assumes direct distance
(GC) from DEST to ALTN airport.
EXTRA/TIME is computed based on trip fuel for alternate and reserves
entered in [4L] and [5L].
If these values do not comply with fuel requirements or if distance for
ALTN is unrealistic, EXTRA/TIME is erroneous.
HOLD time available displayed on HOLD page is based on EXTRA shown
on FUEL PRED page. If EXTRA is not correct, HOLD TIME is also
erroneous.
In this case an adjustment should be made to FINAL fuel.
See following example.
FUEL PRED
AT UTC EFOB
EGLL 1625 4.3
EHAM 1708 2.4
GW /CG FOB
63.7 /25.0 5.68/FF+FQ
RTE RSV/% CRZTEMP/TROPO
0.1
/5.0
----°
/35000
FINAL/TIME
1.0
/0030
EXTRA/TIME
1.3/0036
EFOB AT DEST
4.3
EFOB AT ALTN
2.4
RTE RSV
0.1
+ FINAL
1.0
+ EXTRA
1.3
TRIP FUEL FOR ALTN (1.9)
TOTAL RESERVE (2.4)
-
AIRBUS A318/319/320/321
© THALES AVIONICS S.A.
J43126AA 00
Summary of Contents for FMGS
Page 2: ......
Page 36: ...J43126AA 00 PAGE INTENTIONALLY LEFT BLANK THALES AVIONICS S A AIRBUS A318 319 320 321 ...
Page 88: ...J43126AA 00 PAGE INTENTIONALLY LEFT BLANK THALES AVIONICS S A AIRBUS A318 319 320 321 ...
Page 294: ...J43126AA 00 THALES AVIONICS S A AIRBUS A318 319 320 321 PAGE INTENTIONALLY LEFT BLANK ...
Page 582: ...J43126AA 00 PAGE INTENTIONALLY LEFT BLANK THALES AVIONICS S A AIRBUS A318 319 320 321 ...
Page 623: ...AIRBUS A318 319 320 321 I II III IV Part V APPENDICES V THALES AVIONICS S A J43126AA 00 ...
Page 624: ...J43126AA 00 PAGE INTENTIONALLY LEFT BLANK THALES AVIONICS S A AIRBUS A318 319 320 321 ...