Fuel System a320 Questions

FUEL SYSTEM A320

The fuel quantity indication on ECAM for the outer cell is boed a!ber if "

a# $uter cell fuel te!%erature is hi&h b# An outer fuel tan' lo( le)el is detected c# *oth transfer )al)es fail to o%en (hen inner fuel tan' is at l o( le)el

+hat is the !,ni!u! fuel quantity for ta'eoff a# b# c# d#

-.200 '& -./00 '& 2.000 '& -.000 '&

urin& nor!al o%erations (hen should the fuel transfer )al)es o%en

a# +hen a lo( le)el is sensed in the center tan' b# +hen lo( le)el is sensed in either inner (in& c ell c# +hen a lo( le)el is sensed in either outer (in& cell

+ith fuel in the c enter tan'. the CT1 T M$E SEL %ushbutto! $ 4L567TS $UT8. the center tan' %u!%s " a# *oth are correct b# +ill o%erate for a short %eriod aft er the first en&ine MASTE1 s(itch is selected $ and (hile are retracted c# They (ill continue to run until the center tan' i s e!%ty or slats are etended

Fuel can be transferred fro! the tan' to tan' a# b# c# d#

5n fli&ht if the f uel 9 FEE %ushbutto! is selected $:E $nly on the &round Fuel can ne)er be transferred 5n fli&ht if the f uel 9 FEE %ushbutto! is selected $:E and c enter tan' M$E SEL %ushbutto! is selected to MA

+ith the center tan' %u!% !ode SEL s(itch in AUT$. the center tan' %u!%s a# b# c# d#

1un for t(o !inutes after both e n&ines are runnin& All the abo)e Continue to run until fi)e !inutes after the c enter tan' is e!%ty +ill not restart until slats are retracted in fli&ht

The !essa&e CT1 T FEE6 a%%ears i the MEM$# +hat does this !ean a# b# c# d#

A re!inder to s(itch the center tan' %u!%s $FF The center tan' %u!%s are $FF At least one center tan' %u!% is ener&i;ed The center tan' fuel !ode selector is $FF

+hy do the center tan' %u!%s sto% auto!atically (hen the slats are etended for ta'eoff a# To ensure that the en&ines are fed fro! the (in& tan's for ta'eoff 4feedin& se&re&ation8 b# To 'ee% the center of &ra)ity as lo( as %osible c# urin& ta'eoff. the center tan' fuel i s &ra)ity fed only d# u!%in& ta'eoff. the center tan' fuel is %u!%ed to the rear to Tri! aircr aft

+ith fuel in the c enter tan' the CT1 T M$E SEL %ushbutto! selected to AUT$ and CT1 T :UM: %ushbutto! $ 4L567TS $UT8.(hich of the follo(in& conditions cause the center tan' fuel %u!%s to sto% a# Etension of the slats 4after co!%letion of the short test cycle8 b# For a short test %eriod af ter the first En&ine Master is selected $ (hen the slats are e tended c# Anyti!e the slats are etended ora n o)erfill condition is detected in either (in& inner cell

The (in& fuel transfer )al)es are a# $%en auto!atically at the start of r efuellin& b# Manually controlled and o%en (hen the M$E SEL %ushbutto! is selected to MA c# Are electrically held closed d# Auto!atically close if a lo( le)e lis sensed in either !ain (in& tan'. they auto!atically close at the net fuellin&

6ra)ity feed to the en&ines is enabled fro! a# The (in& tan's only b# The center tan' only c# The (in& and center tan's

7o( has the fuel been transferred fro! the outer to the inner tan's a# The transfer )al)e has been o%ened auto!atically be the lo( le)er sensor in the inner tan' b# The transfer )al)e has been o%ened auto!atically by the lo( le)er sensor in the center tan' c# *y the settin& the M$E SEL :* to AUT$ d# *y the settin& the M$SE SEL :* to MA

After en&ine start. center tan' fuel %u!%s r un for <<<<<< !inutes a# - !inutes b# 2 !inutes c# / !inutes

Fuel transfer fro! the outer co!%art!ent to the inner co!%art!ent of the (in& tan' occurs (hen the inner co!%art!ent quantity decreases to a# b# c# d#

=/0 '& /000 '& 2/0 '& >/0 '&

An a!ber line a%%ears across the last t(o di&its o the ECAM F$* a# Fuel quantity is unreliable b# The center tan' %u!%s ha)e failed c# The center tan' %u!%s are s(itched off

Fro! (hich tan's (ill fuel &ra)ity feed a# b# c# d#

$uter cell of the (in& tan's. in ner cell of the (in& ta n's. and ?or center tan' The center tan' only $uter cell of the (in& tan's. and inner cell of the (in& ta n's 5nner cell of the (in& tan's. a nd center tan'

Fuel transfer fro! the outer co!%art!ent to the inner co!%art!ent to the inner co!%art!ent of the (in& tan's occurs (hen the inner co!%art!ent quantity decreases to a# b# c# d#

/.000 '& >/0 '& =/0 '& 2/0 '&

The A:U fuel syste! a# b# c# d#

Uses it@s o(n dedicated C %o(ered fuel %u!% $btains fuel fro! the left fuel !anifold )ia the ri&ht side fuel %u!%s $btains fuel fro! either center tan' %u!% $btains fuel fro! the left fuel !anifold )ia the left side fuel % u!%s or if needed the A:U fuel %u!%s

The !essa&e $UTE1 T FUEL 9T1 a%%ears in the MEM$ a# b# c# d#

Fuel is transferrin& fro! the center tan' to the inner tan' 5t is a re!inder to sho( t hat a transfer )al)e is o%en Fuel is transferrin& fro! the inner tan' to the outer tan' 5t is a re!inder to o%en t he outer tan' transfer )al)e

The FUEL USE indication on ECAM is reset a# Manually by the %ilot b# Auto!atically at electric %o(er u% of the aircraft c# Auto!atically at en&ine start on the &round

+hat indication (ill you see on the o)erhead fuel %anel if the centeer tan' has !ore than 2/0 '& of fuel and the left or ri&ht (in& tan' ha)e less than /000 '& a# b# c# d#

Auto feed fault Mode select fault Fuel 5!balance Fuel Auto feed fault

There are <<<<<<<<<< fuel %u!% in each A320 fuel tan' a# 2 b# = c# Center tan' %u!%s do not sto% / !in center tan' lo( le)el reached# +here (e can see that a# 5t is %osible to deter!ine their %osition b# $nly on the ECAM Fuel %a&e c# Yes. only on the refuelin& %anel

After en&ine shutdo(n. (hat are your actions to closet he fuel transfer )al)es a# o action is requiered#The )al)es (ill close auto!atically durin& the net refuellin& b# You ha)e to call !aintenance to closet he )al)es c# You ha)e to s(itch the inner tan' %u!%s off

+ith the center tan' %u!% !ode SEL s(itch in AUT$. the center tan' %u!%s a# b# c# d#

1un for t(o !inutes after both en&ines are runnin& They sto% auto!atically / !in after center tan' lo( le)e lis reached +ill not restart until slats are retracted in fli&ht At the abo)e

Can the %osition of the (in& fuel transfer )al)es be chec'ed a# 5t is not %osible to deter!ine their %osition b# Yes. only on the refuelin& %anel c# $nly on the ECAM Fuel %a&e d# one of the abo)e#