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On larger fires, an intermediate
helicopter will be dedicated for the
job, on short standby and used for
little else, except when prevailing
conditions are not conducive to
burning, and you may be assigned to
other flying duties.
Always expect a Forestry Officer to
be on board.
Your maximum speed is whatever
you can control, after Flight Manual
limitations, so burning fuel reaches
the ground at about 15 kts. If you go
too fast, say over 20, the mixture will
be too lean and the fuel will be used
up before reaching the ground.
Special Use Of Aircraft 205
When greater than translation, fuel
will recirculate to give a poor
pattern, aside from damaging the
equipment.
Otherwise, common-sense rules
apply, such as keeping the helicopter
(or the mixing area) well away from
buildings, etc. on the pad, grounding
everything, wear flameproof or
resistant clothing and equipment, or
at least cotton protective clothing,
brief anything that moves, etc. Don't
forget equipment spares, and to fly
into wind, or you will be blinded by
your own smoke.
Vertical reference skills are needed,
as you must place your torch right
next to a second fuel/gel drum for
quick and easy turnarounds. In some
cases, such as backburning to a
seismic line, you will need to be
quite accurate, as when igniting the
very edge of the upwind side of a
given cut line (ensure your mirror(s)
are properly adjusted). You must be
able to clearly see where the flaming
fuel/gel is contacting the ground.
Beware of violent vertical up and
down drafts close to a large flame
front. In an updraft, keep the disc
loaded for the inevitable downdraft
that will follow, in which case you
should be light enough to allow a
safe margin of available power to
prevent contact of your torch with
the treetops. For this reason, 400-
450 lbs of fuel seems to work well
with a LongRanger. As with any fire,
be prepared for moderate turbulence
and rapid reductions in visibility,
keep your doors on, and your
windows closed, as small bits of
burning ash and debris can enter the
cabin. Be wary of pinstriping, or
lettering, etc. that is not painted on.
Activate the torch in spurts from 3-5
seconds, then off for 2 seconds, then
on, etc. This prevents pump, and
output nozzles, from overheating,
and will reduce the chances of the
circuit breaker popping. Disarm the
circuit breaker during the ferry to or
from the burn area, and when the
equipment is active, try to fly only
over that location, or you might start
another fire somewhere else.
Carry your Bambi Bucket with you,
so if it all goes pear-shaped, you can
put the fire out you just started!
Casualty Evacuation/Air
Ambulance
Patients just being moved from one
hospital to another do not qualify
for any exemptions for saving life,
but special provisions may apply for
duty hours.
A Helicopter Emergency Medical Service
(HEMS) flight is for immediate and
rapid transportation of medical
personnel, supplies (equipment,
blood, organs, drugs) or ill or injured
persons and anyone else directly
involved. An approval is required.
The purpose of a casevac is to give
immediate assistance to sick or
injured people in life threatening
circumstances, typically from the
scene of an accident.
Otherwise, there are two types of
ambulance flight, Intensive Care
206 Operational Flying
Transport (ICT) and Ambulance Taxi
Transport (ATT). Both are usually
planned in advance, meaning that
there’s not so much of a rush. Any
police observers or medical
attendants should be able to monitor
and assist the patient during the
flight and inform you of any
problems.
Whatever you get involved in, the
following should generally be
avoided:
· Anyone with previous or
present signs or symptoms
suggesting epilepsy or any other
form of fit.
· Unconscious patients, unless inflight
attention is available.
· Patients with severe
haemorrhagic types of injury,
unless in-flight attention is
available.
· Abdominal or chest injuries if
altitude changes of up to 1500
feet are likely to be involved.
· Those under the affluence of
incohol or drugs, unless
prescribed by a qualified doctor.
· Persons of unsound mind or
who may be a danger to the
aircraft or persons therein.
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