2-3. INTRODUCTION -continued.
c. Special Instructions continued.
Leakage definitions for operator/crew PMCS shall be classified as follows:
Equipment operation is allowable with minor leakage (Class I or II). Of course, you must
consider the fluid capacity in the item/system being checked/inspected. When operating with
Class I or II leaks, continue to check fluid levels as required in your PMCS. When in doubt, notify
Class II[ leaks should be reported to your supervisor.
Class I. Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II. Leakage of fluid great enough to form drops but not enough to cause drops to drip from item
Class III. Leakage of fluid great enough to form drops that fall from the item being checked/inspected.
2-4. GENERAL MAINTENANCE PROCEDURES
As you perform your PMCS, keep in mind the following:
Cleanliness. Dirt, grease, oil, and debris only get in the way and may cover up a serious problem.
Bolts, Nuts, and Screws. Check them all for obvious looseness and missing, bent, or broken condition. You
cannot try them all with a tool, of course, but look for chipped paint, bare metal, or rust around bolt heads. If you
find a problem, report it to your supervisor.
Welds. Look for loose or chipped paint, rust, or gaps where parts are welded together. If you find a bad weld,
report it to your supervisor.
Electrical Wires and Connections. Look for cracked or broken insulation, bare wires, and loose or broken
connectors. Tighten loose connections and make sure the wires are in good condition. If you find a bad wire or
connector, report it to your supervisor.
Water Lines and Fittings. Look for wear, damage, and leaks. Make sure clamps and fittings are tight. Wet spots
show leaks, but a stain around a fitting or connector can mean a leak. If a leak comes from a loose fitting or
connector, or if something is broken or worn out, report it to your supervisor.