TM 1-1500-204-23-1
Table 10-1. Parts and Fabrics Affected by Moisture and Fungi - CONT
Part or fabric
Effects of moisture and fungi
Molded Plastics: Terminal strips and boards, switchboard
Machined, sawed, or ground edges or surfaces
panels, connectors, etc., and tube sockets and coil forms.
are supporters of fungi, causing shorts and flash-
overs. Fungus growth reduces resistance be-
tween parts mounted on plastic to such an
extent that the item Is useless.
Soldered joints
Excessive soldering flux on terminal boards
holds moisture, which speeds up corrosion and
growth of fungi Soldering irons should not
come in contact with wire insulation.
Wax: For impregnation
Fungus-inhibiting waxes which are not clean
support fungi, thus causing destruction of
insulating and protective qualities and permitting
entrance of moisture which destroys parts and
unbalances electrical circuit.
Wood: Cases, houses and housings, plastics fillers,
Moisture and fungi cause dry rot, swelling, and
masts, etc.
delamination.
(13) Run up reciprocating engines at least
once every third day.
(14) Operate gas turbine engines at least
once every seven days for approximately 10 minutes at
flight idle.
(15) Inspect webbing for wear and fungi.
(16) Inspect canvas or duct covers for
wear, torn seams, stains, fungi, etc.
b.
Parts and Fabrics Affected by Moisture and
Fungi. Parts and fabrics affected by moisture and fungi
are shown In table 10-1.
10-12
