(10) When possible, accomplish repairs and
servicing during early morning hours, or in late
afternoon, evening, and night, when heat is less intense.
Desert camouflage netting can be used for shade.
(11) Ground aircraft, funnel, and fuel nozzle
during refueling operation. Accomplish filling of
gasoline from cans, using a filter funnel that fits snugly
into tank opening Exercise every precaution to exclude
sand from gasoline and oil during servicing operations.
(12) Where possible, service oil system
directly from can to oil tank, without using an
intermediate measuring can.
(13) Keep lubricants and gasoline drums
temperature below 120°F (
sand/dust. Extra measures should be used to secure
aircraft and shelter.
(16) Ensure voltage regulators are properly
set during all temperature changes.
(17) Tape all opening or seams around
windows, chin bubbles, seldom used access panels, etc,
being sure not to Inhibit or restrict airflow required for
cooling, or increase Infrared (IR) signature. An entry is
required on DA Form 2408-13 in the aircraft log book
after tape has been Installed. Use tape MIL-T-21595
10-4. Tropic Maintenance. The following paragraphs
contain basic principles and procedures essential for
efficient utilization of aircraft equipment and personnel
in tropic areas. Factors having deteriorating influence
on fabrics in tropic areas can be categorized as high
sunshine. These factors create corrosion, rot, mildew,
and mold Preventing these deteriorating effects to
ensure safety and proper operation requires constant,
measures This paragraph is not to be considered as a
substitute for detailed maintenance and operating
instruction, but as a supplement to each aircraft
operation and maintenance manual.
a. Inspection and Preventive Maintenance.
Proper cleaning, packaging, and storing ensures longer
life and serviceability of aircraft and equipment. The
following practices should be used as a guide:
(1) Treat corrosion-affected area.
(2) Prevent rot, mildew, and mold by
keeping fabrics, rubber, and other susceptible items as
dry as possible. Clean fabrics in aircraft daily. The
effects of moisture and fungus on fabrics are listed in
(3) Operate all heat-producing electrical
equipment daily to remove moisture. When this
procedure is not practical, dry equipment using a ground
heater or by placing in sun.
(4) Wash aircraft often, and lubricate
moving parts when aircraft is exposed to salt-laden air
Before drilling holes, ensure that the
characteristics will not be adversely
affected. Damage may otherwise
obstructions, and drill holes where necessary in wings,
fuselage, enclosed equipment, etc., (when approved by
the maintenance officer), to facilitate draining where a
noticeable accumulation of water Is observed.
(6) Leave canopy windows or doors open
when aircraft is parked In sun to permit air circulation
within flight compartment Protect windshields and
windows from sun by covering with canvas.
(7) Blow out brakes frequently with
compressed air when operating from muddy or dusty
fields to prevent damage to brake disks.
(8) To prevent rust, wipe control cables daily
with an oily rag.
(9) Check battery every third day to
maintain proper electrolyte level.
(10) Every 25 hours, dip paper air filter
cartridges in leaded gasoline and dry thoroughly.
(11) Drain all fuel traps and strainers
immediately prior to flight.
(12) While aircraft is on ground, avoid
excessive water in fuel systems by keeping fuel tanks