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toxins caused by metabolisation.
Although it appears otherwise,
alcohol is not a stimulant, but an
anaesthetic, which puts to sleep
those parts of the brain that deal
with inhibitions, etc. The problem is
that these areas also cover
judgement, comprehension and
attention to detail. In fact, the effects
of alcohol are the same as hypoxia,
dealt with elsewhere, in that it
prevents brain cells from using
available oxygen. One significant
effect of hypoxia in this context is
the resulting inability to tell that
something is wrong.
As far as passengers are concerned,
although they get cabin service,
persons under the affluence of
incohol or drugs, of unsound mind
or having the potential to cause
trouble should not be allowed on
board—certainly, no person should
be drunk on any aircraft (people
aren’t generally aware that one drink
at 6000 feet is the same as two at sea
level). This is not being a
spoilsport—drunks don't react
properly in emergencies and could
actually be dangerous to other
people (which is why I always get an
34 Operational Flying
aisle seat – I don’t have to get round
people in the way). Therefore, it's
not just for their own good, but that
of others as well. If you need to get
rid of obstreperous passengers (long
word number 1), you can always
quote the regulations at them (or
even use sarcasm), but don't forget
to fill in an Occurrence Report.
Although the symptoms of colds
and sore throats, etc. are bad enough
on the ground, they may actually
become dangerous in flight by either
distracting or harming you by getting
more serious with height (such as
bursting your eardrums, or worse). If
you're under treatment for anything,
including surgery, not only should
you not fly, but you should also
check there will be no adverse
effects on your physical or mental
ability, as many preparations
combine chemicals, and the mixture
could make quite a cocktail. No
drugs or alcohol should be taken
within a few hours of each other, as
even fairly widely accepted stuff
such as aspirin can have
unpredictable effects, especially in
relation to Hypoxia (it's as well to
keep away from the office, too—
nobody else will want what you've
got). Particular ones to avoid are
antibiotics (penicillin, tetracyclines),
tranquilisers, antidepressants,
sedatives, stimulants (caffeine,
amphetamines), anti-histamines and
anything for relieving high blood
pressure, and, of course, anything
not actually prescribed. Naturally,
you've got to be certifiable if you fly
having used marijuana, or worse, but
it seems that people do in the USA,
which is why your medical results are
faxed to a central office.
Pilots generally are discouraged from
giving blood when actively flying,
and some dental anaesthetics can
cause problems for up to 24 hours
or more, as can anything to do with
immunisation. If you do give blood,
try for a gap of 48 hours, including
bone marrow donations. Although
your blood volume is restored in a
very short time, and for most donors
there are no noticeable after-effects,
there is still a slight risk of faintness
or loss of consciousness (syncope).
After a general anaesthetic, check
with the doctor first.
You shouldn’t fly within 48 hours of
deep-sea diving to more than 10
metres. Food poisoning can also be a
problem, and not just for
passengers—the standard precaution
(like in Airplane!) is to select different
items from the rest of the crew, even
in the hotel.
Don't forget to inform the
authorities (in writing) of illnesses,
personal injuries or presumed
pregnancies that incapacitate you for
more than 20 days (you can fly up to
the 30th week of pregnancy in
Canada, if your doctor agrees, but
wait for 4-6 weeks afterwards before
flying again). There's also an upper
age limit of 60 that affects
commanders on Commercial Air
Transport (can you sue for age
discrimination?). Pilots involved in
accidents should be medically
examined before flying again.
Flight Time & Duty
Hours
Your personal performance
diminishes as you get tired—but you
don't need me to tell you that. Nor
do you need to be told that, on
average, at least 7 hours’ sleep is
needed per night where peak
performance requires about 9.
However, scientists also state that it's
　
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