A.P. 2210G.-P.N.
Pilots's Notes
PART III
HANDLING
MANAGEMENT OF SYSTEMS
47. Management of the fuel system
(a) The L.P. pumps and the L.P. and H.P. cocks must be on
before starting and for all normal forms of flight.
(b) Use fuel from the wing drop tanks first, if these are fitted.
When WING ON is selected, the fuel transfer warning
light comes on momentarily and then goes out, indicating
that the fuel is being transferred, the fuel gauge readings
should remain constant. As soon as the light comes on
again (or when the gauge readings start decreasing) select
BELLY ON; the warning light will go out. The gauge
readings will drop to approximately 125/125 gallons and
then remain constant. When the ventral tank stops feeding,
the total remaining fuel is indicated on the contents gauges;
the transfer warning light will come on and remain on.
On pre-Mod. 1841 aircraft, return the fuel transfer handle
to OFF; the light will then go out.
(c) Freezing of the ventral tank inward vent valve may occur
whilst flying at altitude with wing tanks selected. This will
prevent the ventral tank from feeding when it is ultimately
selected. Freezing of this valve can be avoided by carrying
out the following drill:-
1. After starting, check the ventral tank flow.
2. Take-off with wing tanks selected.
3. Until the wing tanks are empty, make frequent sele-
tions of the ventral tank.
(d) Use of the balance cock
(i) When flying on two engines. Any out-of-balance state
can be quickly corrected by use of the balance cock
and, if necessary, altering the attitude of the aircraft.
Unequal balancing in the main tanks will occur, par-
ticularly as a result of steep climbs or descents; this is33
|
