FLIGHT SAFETY :: PILOTS, IT'S YOUR DECISION
Most accidents are the result of the pilot's
actions. This includes their skill level and, most important
of all, the decisions that they make. This section details
some of the factors that can affect how the pilots decisions
do - or don't - keep the aircraft in one piece and the occupants
safe.
TO GO OR NOT TO GO
a Weather
Probably the single most important factor in Microlight
flight safety is the decision of a pilot to begin, or
to continue with a flight, in unsuitable weather conditions.
As you might expect, weather was a major factor in fatal
accidents: over 80% of Controlled Flight Into Terrain
(CFIT) accidents happened when the pilot either continued
flying into adverse weather, or did not appreciate the
actual effects of the weather conditions. Crosswind landings
seldom result in fatalities, but they still feature in
many accidents resulting in broken aircraft and painful
injuries. Remember that weather does not stay constant,
it doesn't always do what the forecast predicts, and it
can deteriorate very fast. Respect the weather, and the
implications for flight safety. That doesn't just mean
other less experienced people who can't fly so well are
the ones who should respect the weather; it means you.
b I Can't Turn Back Now!
Any competent pilot knows that weather can, and will,
change enroute. If it does, it is essential that the pilot
is prepared, and willing to divert or turn back if conditions
deteriorate. It does not reflect badly on your ability
as a pilot if you turn back in poor weather, in fact,
it reflects good judgement and realistic assessment of
the situation. It is also important that diverting is
feasible in practical terms. Have you got enough fuel?,
money to get home, or pay for a hotel? Have you promised
to be somewhere important? Never put yourself in a position
where you would not feel able and willing to turn back
if necessary. No Monday job is worth dying for on a Sunday,
so carry your driving licence and credit card. The decision
to turn back will be made easier if you have practised,
in advance, to fly the relevant manoeuvres on instruments,
for example: a 180% turn and if necessary climb to a higher
Minimum Safe Altitude (MSA).
c Chain of Events
In aviation accidents, it is common to find a chain of
events where one shortcut or poor judgement leads to another.
For example, the apparent 'cause' of an accident may be
that the pilot has attempted a landing in marginal weather
conditions, has not diverted or turned back despite reducing
visibility, or has descended below the Minimum Safety
Altitude (MSA) to try to establish their position. Consider
why they chose to do this - was it really an isolated
bad judgement, or could they have been short of fuel due
to poor planning and lack of contingency time?.
NOTE: This MEF of 1700 ft is higher than you might
expect because masts of 300 ft or less are NOT shown on
the chart. MSA is at least 1000 feet above the Maximum
Elevation Figure (MEF) in the relevant chart lat/long
square. Remember that good planning, proper use of forecasts,
awareness of terrain features en route and relevant safety
altitudes, are not just good practice - they save lives.
d But I've Done it Before!
Why do some highly experienced pilots believe that they
can safely fly in marginal conditions, ignore their MSA,
or attempt extreme aircraft manoeuvres? One of the reasons
could be that either they, or others that they know, have
done it before and 'got away with it'. This may well be
true, but it certainly does not prove that it is safe.
Imagine if your son or daughter tried to convince you
that it was quite safe for them to cross a busy road blindfold,
because they did it yesterday, and survived? What would
you say to them?
e But I Know Someone Else Who Does It!
People vary in all kinds of ways, experience, concentration,
skill, how they are feeling on a certain day, how much
sleep they had, how much sleep they need, the after effects
of recent illness, and their personal or domestic circumstances.
The fact that someone else, on a particular day, can land
in a marginal crosswind does not mean that you can necessarily
do the same. The fact that you can do this does not mean
that you should encourage someone else to do the same.
Being a competent pilot means correctly assessing your
own limitations on a particular occasion. It does not
mean pretending that if someone can do it, then everyone
can do it every time; or that if someone else is doing
it, that necessarily makes it safe or wise.
f Exercising Sound Judgement
Pilots enjoy a great deal of freedom, despite the unforgiving
nature of flying. The reason for this is that the regulatory
authorities place a great deal of trust in the pilot to
exercise competent judgement concerning flight safety.
Qualified pilots are thought to be capable of making responsible
decisions about whether it is safe to fly, taking into
account their experience level, aircraft type, location,
personal physical and emotional state, and prevailing
or expected weather conditions. There are two serious
threats to the use of this judgement: if the pilot himself
has an excessively optimistic view of the situation or
of his own ability; or else, is persuaded by other people
to proceed with a flight against his better judgement.
How can this happen?
g But You Promised!
Never promise to fly on a certain day or to be somewhere
important, if you can only get there by flying. If it
really is important to be there, leave yourself time for
alternative surface transport. Tell friends or relations
that you may be able to take them flying weather permitting.
Better still, keep it as a 'surprise', decide on the day
if you feel prepared and fit, the weather is fine, and
the aircraft is serviceable, and offer to take them flying.
They won't know that you had to book the aircraft a month
in advance. It is always disappointing to cancel a flight
if you have nonaviator people, especially children, looking
forward to the trip. This is particularly true if the
reasons are not easy for them to understand.
h Peer Pressure
There will always be people who will pressure you in subtle
ways to take risks that you don't feel comfortable with.
They can be prevalent in clubrooms, asking you if you
flew on a certain windy day, and smiling smugly if you
say that you cancelled whilst they braved the crosswind,
low cloud or lack of horizon. 'You diverted? What an idiot!
I'd have carried on and got there...'.Perhaps they would;
alternatively they might have carried on and not got there.
Perhaps they are just full of bravado and wouldn't have
carried on at all. Perhaps they have more experience,
a better equipped aircraft, or suicidal tendencies. It
doesn't really matter. The fact is that the world of aviation
relies on competent and independent pilot judgement, and
the pilot is you. If you are swayed by clubhouse buffoons,
then you are more afraid of their dubious opinions than
of your own death. If this applies to you, you may not
have the character that is expected of a pilot licence
holder.
i Audiences: Are You Impressing Anyone?
In the review of fatal accidents, more than half of the
low flying and aerobatic accidents involved an 'audience'
- seldom at a formal airshow, but more often to impress
friends on the ground, at the clubhouse, or even passengers
taken for a flight. The temptation to 'show off', to impress
those watching, proved fatal in too many cases. (In fact,
the 'audience' are not necessarily filled with admiration
while watching these antics. They may simply be wondering
when the accident will happen, and what this person is
doing with a licence.) Before you decide to take such
a risk, ask yourself: would the people who are watching
be prepared to risk their lives to impress you? What would
you think of them if they were?
j Joint Decisions
It is a well known phenomenon that a joint decision made
by a group of like minded people is usually more extreme
than the decision that any one of them, alone, would have
made. Pilots tend to be, by their nature, fairly adventurous
individuals who are willing to face a certain amount of
risk in order to pursue their activities. Committee decision:
'we'll give it a go!'
DIFFERENT RISKS FOR DIFFERENT PEOPLE
a: Age Groups
The review of fatal accidents suggested that the risks
for young pilots were a little different from those of
more mature years. Young pilots - especially young male
pilots - sometimes took quite unnecessary risks in terms
of low flying and aerobatic manoeuvres, often in front
of friends or others watching (see'Audiences' above).
Older pilots seem less tempted to perform spectacular
or risky manoeuvres, but they may take a different kind
of risk. Pilots who fly into terrain, under full control
of their aircraft and without any significant technical
failures are, on average, older than pilots involved in
other kinds of fatal accident. Typically, these pilots
continued flying into adverse weather conditions, and
/ or ignored their MSA (if indeed one had been calculated).
b Total Experience Level
Pilots involved in the fatal low flying and aerobatics
accidents are usually highly experienced. Perhaps they
believe that because of their very high hours, they can
fly safely in these very unforgiving regimes. Pilots in
fatal CFIT accidents are also typically very experienced.
Again, they may believe that their long experience might
allow them to fly safely in conditions that others are
advised to avoid. If this thought ever enters your mind,
remember that all of those highly experienced pilots in
the fatal accident reports also thought that 'it would
be all right'. Pilots with low flying hours may be vulnerable
to a different kind of accident. Those with very low hours
feature less in the accident reports than those with 200
- 500 hours. The latter group seem to be more likely to
lose control of the aircraft during visual conditions.
This is probably not very surprising, given that these
pilots are still quite inexperienced, and may be moving
for the first time toward some slightly more ambitious
flying.
c Use It or Lose It
Recency may also be a safety issue; the fact that you
could do something perfectly six weeks ago does not mean
you can immediately do it now. A skill is like a message
written in chalk on an outdoor wall - it gets eroded a
little every day. If the writing is retraced repeatedly
it will become more enduring. Even then, it will be eroded
eventually if it is not periodically refreshed. Skills
are refreshed via practice, annual or recency checks or
post qualification training.
ONLY HUMAN
a Trust Me, I'm a Pilot
Despite what some people may think, pilots are only human,
and have normal human limitations. The fact that pilots
are trained, experienced and competent, does not mean
that they will always perform perfectly, that they will
never experience an 'off day', overload, illusions or
distorted perceptions, or that they will never make a
mistake. Everyone recognises that physical parts of the
aircraft have a certain expected failure rate, and this
is (correctly) seen as a realistic, normal performance
level. Human pilots also have a 'realistic' performance
failure rate, and it is not zero.
b To Err is Human
One characteristic of human beings is that we all make
mistakes, no matter how well trained, competent, careful,
or skilled we may be. Nobody is immune from errors, and
the person who imagines that they are infallible is the
most dangerous of all. There are two general classes of
error:
- 'slips and lapses' include 'finger trouble', errors
in data entry or recording (such as writing down the
wrong digits), or not noticing that an instrument reading
has changed;
- 'mistakes' refer to actions that the pilot makes intentionally,
and executes correctly, but they turn out to be a bad
plan.
In general, mistakes are more easily reduced by training,
but they still canand do happen. The important thing is
to recognise and rectify mistakes - and to learn from
them. Slips and lapses can happen to anyone and
are, if anything, more likely in highly
skilled, experienced people.
c Believing is Seeing
There are well known optical illusions that can affect
pilots judgement, eg. height perception when approaching
sloping runways. In other circumstances, there can be
a mental distortion that is nothing to do with visual
illusions as such, but
can be just as dangerous. Human beings are selective about
what they 'see'. If a person believes something to be
true, then they will tend to 'see' only those cues in
the environment that are consistent with that belief,
treating these as positive confirmation that the belief
is correct, and 'not see', 'blot out' or ignore any evidence
to the contrary. Unfortunately, pilots are no exception
to this rule. If a pilot has formed the belief that he
is at a certain geographic location, then his mind may
try to organise whatever cues are present in a manner
that will confirm this belief. This means that conscious
cross checking to look for differences to expectation
are critically important, and frequently a
feature of aviation procedures. This principle can even
apply to the expectation that instruments should be showing
a certain reading, or hearing an ATC clearance that is
expected or usual. It is vital that instruments are actually
read and
messages are really listened to, with at least some anticipation
that they may not say what you expected. It is
difficult for anyone to accept this about themselves,
especially if they are highly technically qualified and
experienced. Believe it: if you are human, this does apply
to you.
d Stress
Stress is a familiar feeling to most people. When people
are stressed, their judgement can be affected, and their
thinking may be unclear. They may suffer from 'tunnel'
thinking, concentrating on (or over-reacting to) one particular
problem to the exclusion of all else. This is dangerous.
If there is a problem in flight, the pilots first priority
must be
safe flight. Attention to a faulty radio, airsick passenger,
or navigation problem must be a secondary task. If you
are feeling stressed before a flight, consider whether
you should cancel. If you can foresee a period of high
workload during the flight, rehearse it mentally, prepare
as much as possible ahead of time and, above all, remember
that your first priority at all times is to fly the aircraft.
ONLY A MACHINE
a Trust Me, I'm Electronic
Just as human beings can make errors, mechanical and electronic
devices can also be faulty. THINK about what your instruments
should say - do a mental 'reality check'. Always cross
check with a second source (e.g. landmarks in the outside
view) if possible. Change - especially movement - attracts
attention from our senses, but a static condition, or
a
very slow rate of change, is more likely to go unnoticed.
It is important to check all instruments regularly, never
think that your attention will automatically be drawn
to a deteriorating situation. If your fuel gauge is stuck
on full, the needle will remain steady, although actual
fuel levels will be dropping. There will be no rapid movement
or change to attract your attention.
b GPS
GPS is becoming a common accessory for GA pilots. It can
be tremendously helpful at times and is probably an overall
safety 'plus'. However, a few words of caution:
- Never use GPS as your primarymeans of navigation
- Never use it to land in poor visibility
- Never spend time head down, fiddling with GPS, and
not watching the outside world.
- Never believe GPS data without question. It is NOT
infallible and it CAN go wrong.
- Never fly in conditions that you would normally avoid,
because you believe GPS will reduce the risk and get
you there safely.
SUMMARY
Most pilots want to enjoy the freedom to fly when, where
and how they want to, whilst maintaining safety for themselves
and others. The way to achieve and sustain this situation
is to:
- be realistic about the weather
- work out a Minimum Safe Altitude (MSA) and keep to
it
- use your judgement responsibly,
- don't be pressurised to fly
- know your own limitations
- prepare thoroughly
- allow for contingency
- have enough fuel
- be prepared to divert
- rehearse for possible 'situations'
- use good practice in your planning and flying
- don't take unnecessary risks.
This will avoid the need for additional regulations and
restrictions, and give you safe,enjoyable flying.
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