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checked regularly, but, with
helicopters, there are fewer
guarantees that this will happen. For
a start, there's a lot more vibration,
and there are less places to attach
them, as they should be fitted as far
aft as possible, aligned fore-and-aft
so the shock forces activate the G
switch properly. Where it's fitted in
the cabin, it's often switched off so it
doesn't get kicked or bashed and set
off accidentally, which is why it's a
good idea to include switching the
thing on as part of your emergency
checklist on the way down. Not all
military helicopters monitor 121.5, as
it's primarily a civilian emergency
channel, so get one with 243 Mhz as
well, which is where they mainly
hang out.
Make sure the survival kit can be
easily opened one-handed with cold
fingers! Talking of which, this item
should also be inspected regularly, as
you don't want any nasty surprises
when you come to use it, and find
that someone's pinched the
chocolate, or the matches. As space
is limited, food should be of a lesser
priority than firemaking and
signalling devices, and drinking
water, or purifying tablets, at least,
and anything specially required for
the area you are in, but you still need
it (power bars and chocolate carry a
good bang for buck). Try to carry it
in your pockets, or in a place you
can get it in a crash, because
Murphy's Law will dictate that the
luggage compartment is underneath
the hull.
Your local regulations should give
you a good list of what is required in
a survival kit, but here are a couple
of extra items to consider:
Magnesium is great for starting fires,
as is masking tape (or duct tape in N
America), which can also be used for
strapping up wounds, etc. Heavy
duty garbage bags are great for
keeping the rain off, and you may
need a licence to carry a weapon, if
one is included.
Dangerous Goods And
Weapons
This chapter is not needed for the
exam, but is included for when you
join a company later. The information
is for training purposes and is not an
official interpretation.
The term Dangerous Goods includes
anything that poses a risk to life,
property or the environment, such as
aerosols, solvents, paints, chainsaws,
matches, stoves, car batteries, gas
tanks and even perfume under the
right circumstances – in other words,
mostly stuff that anyone may have at
home, but subjected to the forces
involved in transportation, such as
expansion and compression, or
simply being handled differently
(fuel evaporates more quickly at
altitude). Even a 9-volt battery can
generate enough heat to start a fire
when its terminals are shorted out.
Dangerous Goods could be toxic,
flammable, corrosive, infectious,
radioactive or explosive, or a
combination, and the rules apply
regardless of the reason for their
movement, commercial or private.
Many items carried in an aircraft are
hazardous to your health, including
fuel, ethylene glycol, methyl alcohol,
halon, hydraulic fluid, carbon
monoxide, etc.
One key to its safe transport is
packaging - single packaging means
things like oil drums or propane
cylinders, by themselves. Combination
packaging covers batteries or bottles,
etc. inside boxes (in other words,
there is some element of doubling
up). If you need it, approved
packaging can be obtained from
various manufacturers, but it will be
relatively expensive, since they have
some sort of hold on the market.
However, if you ship the goods in
Limited Quantities, specialised
packaging may not be needed.
The other key to safe transport of
Dangerous Goods is training, which
is the purpose of this chapter. The
idea behind such training is to make
sure you know how to package the
stuff in the first place and what to do
if it leaks or is otherwise damaged,
154 Operational Flying
because it may affect the flight
characteristics of your machine, and
the way an emergency is handled by
people on the ground.
Dangerous Goods come in nine
classes, described below, which
should have a diamond-shaped label
on their packaging to identify them:
The number at the bottom helps
identify the hazard.
Sometimes, there will be two labels,
where a substance or material comes
with more than one risk. In this case,
there will be a primary and secondary
label (secondaries do not have a
classification). Handling labels (e.g.
　
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