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SECTION 8 CESSNA
HANDLING, SERVICE, AND
MAINTENANCEMODEL 2088 (675 SHP)
FUEL
(Continued)
1
Biocide additive may be used on a limited basis, defined as intermittent
.
or non-continuous use in a single application, to sterilize airplane fuel
systems suspected, or found to be contaminated by microbial
,.
organisms. For those operators, where the need for biocide use is
dictated, Pratt
&
Whitney Canada Inc. recommends, as a guide, a
dosage interval of once a month. This interval can then be adjusted,
either greater or lesser, as an operator's own experience dictates. An
engine operated in private and corporate airplanes, where utilization
rates are relatively low, may use the additive continuously. The
following additives are permitted for use:
Sohio Biobor JF
Kathon FP
1.5
CAUTION
ADDITIVE SHALL NOT EXCEED A MAXIMUM
CONCENTRATION OF 270 PARTS PER MILLION BY
WEIGHT.
FUEL CONTAMINATION:
Fuel contamination is usually the result of foreign material present in
the fuel system, and may
conslst of water, rusr, Sand,
dirt,
mlcrobes or
bacterial
qrowth In add~t~on, add tlves rhat are not compat~ble wltn fuel
or fuel system components can cause the fuel to
become
contaminated.
Before each flight and after each refueling, use a clear sampler and
drain at least
one sampler full of fuel from-the ,nboard fuel tank sump
qu.ck-dram valves, fuel tank external sump quick-drain valves, fuel
reservoir
qu crc-dra~n valve (actuated by a pusn-pull dram control on
cargo pod), and fuel f
lter qulck-dram valve ro
determine
if
contamlnants
arepresent, and that the airplane has been fueled with the proper fuel.
If the airplane is parked with one wing low on a sloping ramp (as
evidenced by the ball of the turn and bank indicator displaced from
center), draining of the outboard fuel tank sump quick-drain valves (if
installed) is also recommended.
If contamination is detected, drain all fuel drain points again. Take
repeated samples from all fuel drain points until all contamination has
been removed. If after repeated sampling, evidence of contamination
still exists, the fuel tanks should be completely drained and the fuel
system cleaned.
(Continued Next Page)
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