01 March 2005
If sealant (adhesive) is undamaged, do not
remove identification plate. Only removable
plates shall be removed.
c. Inspect equipment to determine whether it is to be
a. As appropriate, remove plates.
used or removed and forwarded to the IMA. Carefully
check the equipment with sealed bearings. These
b. Thoroughly clean plates and mounting areas as
bearings are not necessarily waterproof and may require
replacement by the designated repair facility.
d. Equipment shall be deemed serviceable after
c. After cleaning, allow plates and mounting areas
emergency preservation by the Organizational/Unit
to dry. Apply coat of Sealing Compound, MIL-PRF-81733
Maintenance Activity. Remove the water-displacing
(Volume IV or V, Chapter 2), and reinstall identification
corrosion preventive compound with Degreasing
Solvent, MIL-PRF-680 Type III (Volume IV or V, Chapter
10-6.3. H E R M E T I C A L L Y SEALED AVIONIC
10-6.5. COCKPIT AREA COMPONENTS. The cockpit
EQUIPMENT. When removing hermetically sealed units,
pay particular attention to cable clamp areas, bindings
a r e a contains various types of components.
securing wire harnesses, and cable connectors. These
Nonremovable components and equipment shall be
are areas where salt and fire extinguishing agents can
10-6.9 through 10-6.14. Removable components shall
be cleaned and preserved as follows:
a. Immerse the unit in a container of fresh water to
test for air-tight integrity of the seal. The presence of air
a. Remove all control boxes, equipment, relay boxes,
bubbles will positively indicate a faulty seal. Units
showing evidence of damage to seals shall be forwarded
to the next higher level of maintenance for disposition.
b. Examine all equipment and components for
evidence of salt water, fire extinguishing agents, smoke,
or oil films.
c. Items that are contaminated shall be cleaned
specific information on fire fighting fluids and volcanic
d. There are exceptions to this cleaning procedure,
such as hermetically sealed pressurized units that would
not be contaminated unless the unit had lost its internal
pressure. These units shall be forwarded to the next
higher level of maintenance for disposition.
e. Special attention shall be given to cockpit electrical
connectors. Clean and preserve connectors as specified
Cleaning is an essential preliminary procedure in
f. Cockpit circuit breakers, toggle, rotary, interlock,
and pushbutton switches shall be cleaned/preserved as