05-50
SPECIAL SCHEDULED MAINTENANCE
Inspect top coat finish for breaks, peel-
ing, lifting of surface, or other dam-
age. Inspect aircraft structure for top
coat finish damage from pitting or in-
ter-granular corrosion.
Inspect hose assemblies for chafing,
weather-checking, hardening, discol-
oration, evidence of fungus, torn
weather protective coatings or sleeves,
and corrosion of fittings.
Replace any defective, damaged,
twisted, or bulging hoses.
Additionally, the following treatment shall be applied:
1. Remove all traces of salt water and salt water residue by thoroughly washing the
aircraft with fresh water.
2. Apply anticorrosion product ACF-50 every 12 months, on the areas indicated in the
following table:
wing attachments, stabilator attach-
ments
Gear attachment, bolts, nuts and pins
Vertical and horizontal stabilizers an
hinges
All metric bearings and terminals
Not on exhaust components
Corrosion prevention Table.
.
3. After drying, coat the unpainted or unprotected parts of the engine and its installa-
tion parts by spraying or rubbing lightly with corrosion preventive compound,
ACF-50.
4. Apply this mixture on parts that move or require some lubrication and on all fittings
subject to corrosion such as control surface hinges, control cables, exposed rivets
and bolts, and other similar parts not protected by paint. Apply with a cloth or a soft
brush soaked in the mixture.
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