RAZAIR
‐
A1
‐
METRO
‐
III
‐
AFM
‐
001
1
‐
35
Fig.
59
Fuel
Boost
Pump
and
Shutoff
Valve
controls
Fig.
60
Fuel
Boost
Pump/Shutoff
Valve
controls
Location.
CROSSFLOW
SYSTEM
A
crossflow
line
interconnects
the
left
and
right
wing
tanks
and
incorporates
a
crossflow
valve
for
fuel
balancing
from
one
wing
tank
to
the
other.
The
crossflow
valve
is
controlled
by
the
CROSSFLOW
SWITCH,
a
rotary
siwthc
located
on
the
pilot
and
copilot’s
switch
panel.
Fig.
61
Fuel
crossflow
switches
The
X
‐
FLOW
OPEN
light
on
the
valve
position
annunciator
panel
illuminates
when
the
valve
is
partially
or
fully
open.
FUEL
SHUTOFF
VALVE
SYSTEM
Each
engine
has
a
fuel
shutoff
valve
in
the
wheel
well
that
is
controlled
by
the
FUEL
SHUTOFF
switch
on
the
center
console
(Fig.
59).
These
normally
open
valves
allow
fuel
to
pass
to
the
engines.
The
amber
L
or
R
FUEL
shutoff
valve
light
illuminates
when
the
respective
valve
is
closed.
FUEL
QUANTITY
INDICATOR
The
FUEL
QTY
gauge
(Fig.
38)
on
the
instrument
panel
is
calibrated
in
pounds
x
100.
This
gauge
is
equipped
with
two
pointers,
one
for
each
wing
tank.
The
gauge
is
tested
by
clicking
on
the
PRESS
TO
TEST
push
‐
button
switch
adjacent
to
it.
When
holding
the
mouse
button,
the
pointers
should
move
to
the
1,250
pounds
position;
when
the
mouse
button
is
release
the
pointers
return
to
the
pre
‐
test
quantity.
FUEL
FLOW
INDICATOR
The
FUEL
FLOW
indicators
(Fig.
36)
are
calibrated
in
pounds
per
hour
and
indicate
the
amount
of
fuel
that
each
engine
is
consuming.