TM 10-4510-206-14
Class 1
Class 11
Class 111
Seepage of fluid (as indicated by wetness or
discoloration) not great enough to form drops.
Leakage of fluid great enough to form drops but
not enough to cause drops to drip from the
item being checked/inspected.
Leakage of fluid great enough to form drops
that fall from the item being checked\inspected.
CAUTION
Euipment operation is allowable with minor leakages (Class 1
or 11).
Of course, you must consider the fluid capacity in the
item/system being checked\inspected.
When in doubt, notify
your supervisor.
When operating with Class 1 or Class 11 leaks, continue to check
fluid levels as required in your PMCS.
Class 111 leaks should be reported to your supervisor or organi-
zational maintenance.
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