TM 1-1520-238-23
Change 9
1-158.5
1.49.
CORROSION CONTROL/INSPECTION – continued
f. Insects/Birds
Damage to aircraft and aircraft subsystems may be caused by insects, birds, and various small animals, especially
in tropical environments. Equipment in storage is most susceptible to this type of attack, since animals may enter
through vent holes or tears in packaging and sometimes build nests. Moisture absorbed by nest plus excretions from
the animals may cause corrosion and deterioration that goes unnoticed until equipment is put to use.
g. Environmental Areas
NOTE
To perform corrosion preventive maintenance procedures go to paragragraph 1.49.17.
MIL-S-8802 or MIL-S-29574 will be used in lieu of primer in coastal and tropical areas as noted in
procedures.
Desert
Intermediate
Coastal
Tropics
High daytime
temperatures
Winter temperatures -25
to 59 F (-32 to 15 C)
High humidity
Humidty up to 100% at
ambient air temperatures
of 85 F (29 C) and
dewpoints approaching 85
F (29 C)
High humidity
Summer temperatures 59
to 125 F (15 to 52 C)
High concentrations of salt
Ultraviolet radiation
Humidity fluctuates
between 5 and 100%
Within 30 miles of coast
Dust
Most North American and
European continents
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