TM-1-1500-344-23-2
AIRCRAFT VOLUME II
TECHNICAL MANUAL; CLEANING AND CORROSION CONTROL
APRIL 2009
TM-1-1500-344-23-2 - Page 160 of 240
9-6
NAVAIR 01-1A-509-2
TM 1-1500-344-23-2
15 April 2009
NOTE
Water displacing CPC (MIL-PRF-81309 Type II)
will deposit a thin, non-conductive film that
must be removed prior to use for proper function
of contact points and other electro-mechanical
devices where no slipping or wiping action is
involved. Water displacing CPC is easily
removed using degreasing solvent
(MIL-PRF-680 Type II) or non-aqueous cleaner
(MIL-PRF-32295 Type I).
9-5.4. ALTERNATE CLEANING METHODS. Use only
when fresh water is not available or is available only in
limited supply or when time prevents immediate flushing
with fresh water.
Compound, Corrosion Preventive
4
MIL-PRF-81309
9-5.4.1. Method One (Preferred). Spray, brush, or wipe
the exterior of the affected areas and components with
liberal amounts of water displacing CPC
(MIL-PRF-81309 Type II).
9-5.4.2. Method Two (Alternate).
Compound, Aircraft Cleaning
2
MIL-PRF-85570
a. Apply a solution of one part aircraft cleaning
compound (MIL-PRF-85570 Type II) in 14 parts water.
b. Brush over affected areas until contaminants and
cleaner become intermixed or emulsified.
c. Wipe-off thoroughly with clean cloth, removing
both contaminants and cleaner.
Compound, Corrosion Preventive
4
MIL-PRF-81309
d. Liberally apply water displacing CPC
(MIL-PRF-81309 Type II) to affected areas.
9-6. REMOVAL OF FIRE EXTINGUISHING AGENTS.
NOTE
Refer to NAVAIR 00-80R-14 for approved fire
extinguishing agents usable on aircraft.
9-6.1
PURPLE-K-POWDER (PKP) AND OTHER DRY
CHEMICAL FIRE EXTINGUISHING AGENTS.
9-6.1.1
Purple K Dry Chemical Powder. The principal
base chemical for Purple-K-Powder (PKP) is potassium
bicarbonate. Since it is a purple powder, the PKP fire
extinguishers are marked with a purple band around the
tank. PKP is primarily used to extinguish flammable
liquid and gas fires such as gasoline, greases, oils, and
paints. When combined with water, PKP could corrode
or stain surfaces. As soon as possible, PKP should be
completely removed from all surfaces.
9-6.1.2. Removing Purple K Powder (PKP) and Other
Dry Chemical Fire Extinguishing Agents. To remove
powdered extinguishants, proceed as follows:
a. Remove as much extinguishant as possible by
vacuum cleaning.
b. Use a soft bristle brush and air pressure not
greater than 10 psi to dislodge contaminants between
close-fitting components.
c. Vacuum clean again.
Compound, Aircraft Cleaning
2
MIL-PRF-85570
d. Remove the residual film of dry powder adhering
to the surface by wiping, brushing, or spraying with a
solution of one part aircraft cleaning compound
(MIL-PRF-85570 Type II) in 14 parts of water.
e. Rinse thoroughly with fresh water.
f. Dry with cloths or paper towels, or blow dry with
air pressure not greater than 10 psi.
Change 1 - 31 March 2010
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