Fuel spills can be caused by ruptured fuel lines.
These spills should be swept clear of the aircraft. Use
water streams and follow u p with a layer of foam to halt
vaporization. An aircraft should NEVER b e dragged or
There is great danger that
friction will ignite the fuel.
You should know the location of the fuel selector
valve o n a s many types of aircraft as possible. In
single-engine aircraft, this valve i s usually found on the
lower left-hand side of the cockpit.
aircraft, fuel selector valves for all engines are usually
found on one panel. Turn the valve t o OFF. I t i s the
primary fuel cutoff valve. The valve i s used to select
various fuel tanks. In the OFF position, the valve
completely separates the source of fuel from the engine.
Turn the battery switch to OFF. This is the master
electrical switch. It is the source of all power t o the
aircraft electrical system when the engine(s) are not
running. Memorize the location of battery switches so
you can turn the power o ff rapidly in emergencies.
Disconnect the battery, i f possible, as detonators and
electrical recognition devices are connected ahead of
the master switch. Turning the switch off will not stop
the flow o f current to these devices.
Turn gun switches to OFF s o there is no chance of
firing a gun accidentally. This is one of the first actions
taken by fire fighters to prevent fire at the crash scene.
When fighting a fire on an aircraft known to
have loaded guns aboard, stay out of the area
forward of the guns. If rockets or bombs are in
the aircraft, stay clear of them, keep low t o the
deck, and keep the bombs or rockets cool with
water fog or fog foam until they are declared
The ejection seat is not normally a fire hazard if fire
is not already present. The ejection seat should be
disarmed or made safe by qualified personnel. The
greatest danger from an ejection seat comes during
rescue operations when fire is present.
The hydraulic system of a crashed aircraft should
be considered a potential hazard. The loss of hydraulic
fluid/pressure could cause an unexpected movement of
the aircraft. The landing gear could collapse or brakes
could release, causing injury to personnel.
FLUID LINE IDENTIFICATION
Many different types of liquids and gases are
required for the operation of aircraft. These liquids and
gases are transmitted through many feet of tubing and
flexible hose. Both liquids and gases are called fluids,
and tubing and flexible hose are referred to as lines. The
term "fluid lines" is used in the following discussion.
Each fluid line in an aircraft is identified by bands
of paint or strips of tape around the line near each
fitting. These identifying markers are applied at least
Figure 12-13.Fluid line identification application.