TM-5-5420-279-10
Leakage Classification and Definition
CAUTION
Equipment operation is allowable with minor leak (Class I or II). Consideration must be
given to the fluid capacity in the item/system being checked/inspected. When in doubt,
notify the supervisor. When operating with Class I or II leaks, continue to check fluid
levels as required in the PMCS. Class III leaks should be repaired using tools available, if
possible. If not, use "Not Fully Mission Capable" column criteria.
8.2.4.1
If leakage is detected, further investigation is needed to determine the location and
cause of the leak. If there is any doubt, contact your supervisor or unit maintenance.
8.2.4.2
Class I. Leakage of fluid as indicated by wetness or discoloration not great enough
to form drops.
8.2.4.3
Class II. Leakage of fluid great enough to form drops but not enough to cause drops
that fall from item being checked/inspected.
8.2.4.4
Class III. Leakage of fluid great enough to form drops that fall from the item being
checked/inspected. Try to fix leak using tools available.
Tools and Equipment
8.2.5.1
For a complete list of tools and equipment refer to Appendices:
D. Basic Issue Items (BII)
E. Component of End Item (COEI)
F. Additional Authorization List (AAL)
G. Expendable and Durable Items List
