05-50
SPECIAL SCHEDULED MAINTENANCE
2. Operation in High Salt or High Humidity Environments
In case of aircraft operating in high salt of high humidity environment (e.g. air-
craft operating over salt water), following scheduled maintenance tasks shall be
applied:
Fuselage, Empennage, Wings
and Control Surfaces
Remove floor panels and exterior ac-
cess plates; inspect for corrosion using
boroscopes, mirrors or other suitable
tools.
Inspect for proper sealing of cases.
Check for corrosion
Inspect upholstery, seat belts and seats
for corrosion and integrity
Visually inspect paint in areas of the
exhaust trails for damage. Visually in-
spect under fairings, around rivet
heads, and in skin crevices, for corro-
sion in areas of engine exhaust trail.
Inspect battery compartment for elec-
trolyte spillage, and condition of pro-
tective paint. Inspect area around bat-
tery vent for corrosion.
Inspect landing gear components for
damage to exterior finish coating and
corrosion. Particular attention should
be given to exposed surfaces, and at-
taching hardware; ribs, and lower skin
surfaces
Inspect control cables for bare spots in
the preservative coating and corrosion.
If external corrosion is found, relieve
tension on the cable and check internal
strands for corrosion. Cables with cor-
rosion on internal strands should be
replaced. External corrosion should be
removed by a clean, dry, coarse rag or
fiber brush. A preservative should be
applied after removal of external cor-
rosion.
Electrical connectors, switches
and breakers
Inspect electrical connectors for corro-
sion of pins and wires. If the electrical
connector is suspected of having mois-
ture intrusion, disassemble the con-
nector, clean the connector, and in-
spect it for corrosion. Inspect circuit-
breakers, contact points, and switches
for evidence of moisture and corrosive
attack.
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