It is necessary for you to know how fluid leaks affect the status of your equipment. The following are definitions of
the types/classes of leakage you need to know to be able to determine the status of your equipment. Learn and be
familiar with them and REMEMBER when in doubt, notify your supervisor.
LEAKAGE DEFINITIONS FOR UNIT PMCS
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
Leakage of fluid great enough to form drops that fall from the item being checked/inspected.
Equipment operation is allowable with minor leakage (Class I or II). Of course consideration must
be given to the fluid capacity in the item/system being check/inspected. When operating with
Class I or II leaks, continue to check fluid levels as required on your PMCS. Class II leaks should
be reported to your supervisor or unit maintenance.