3-7. Quarterly Preventive Maintenance
Service
calendar months, or 250 hours of operation,
whichever occurs first.
a. This paragraph contains an illustrated
b. The item numbers are listed consecutively
tabulated listing of preventive maintenance
and indicate the sequence of minimum require-
services which must be performed by organiza-
ments. Refer to figure 3-3 for the quarterly
tional maintenance personnel at quarterly in-
preventive maintenance services.
tervals. A quarterly interval is equal to three
