SECTION 3
EMERGENCY
PROCEDURES
MODEL 402C
(AMPLIFIED
PROCEDURES)
SUPPLEMENTARY INFORMATION CONCERNING AIRPLANE FIRES
With the use of modern installation techniques
and
material, the probability of
an
airplane fire
occurring
in
your airplane
is
extremely remote. However,
in
the event a fire
is
encountered.
the following information
will
be
helpful
in
dealing
with
the emergency
as
quickly and safely
as
possible.
The preflight checklist
is
provided to
aid
the pilot
in
detecting conditions which could
contribute to
an
airplane
fire.
As
a fire
requires
both
fuel
and
an
ignition
source,
close
preflight inspection should
be
given to
the
engine compartment
and
wing leading edge
and
lower surfaces. Leaks
in
the fuel system,
oil
system, or exhaust system
can
lead
to a ground
or inflight fire.
.---------NOTE----------,
Flight should not be attempted with
known
fuel,
oil
or exhaust
'leaks.
The
presence of fuel, unusual
oil
or exhaust stains may
be
an
indication of
system leaks
and
should
be
corrected prior to flight.
Fires originating
in
flight must
be
controlled
as
quickly
as
possible in
an
attempt to prevent
major structural damage. Both auxiliary fuel
pumps
should
be
turned off to reduce pressure
on
the total fuel system (each auxiliary pump pressurizes a crossfeed line to the opposite fuel
selector). The engine
on
the wing
in
which
the
fire exists should
be
shut down
and
its fuel
selector positioned to OFF even though the fire may not have originated
in
the fuel system.
The cabin heater draws fuel
from
the crossfeed system
and
should also be tumed
off.
Descent for landing should
be
initiated immediately.
An open window produces a low pressure
in
the cabin.
To
avoid drawing the fire into the
cabin, the windows should
be
kept closed. This condition is aggravated
with
the landing gear
and
flaps extended. Therefore, the pilot should lower the gear as late in the landing approach
as
possible. A no-flap landing should also
be
attempted if practical.
A fire or smoke
in
the cabin should
be
controlled
by
identifying
and
shutting down the faulty
system. Smoke may
be
removed
by
opening the cabin air controls
and
wemacs. If the
smoke
increases
in
intensity
when
the air controls are opened, they should
be
closed as this
indicates a possible fire
in
the heater or nose compartment When the smoke
is
intense, the
pilot may choose to expel the smoke through
the
foul weather windows. The foul weather
windows should
be
closed immediately if the fire becomes more intense
when
the windows
are opened.
3-22 1 November 1979
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