MIL-DTL-24784/20B (SH)
"The scheduled maintenance instructions in this manual are intended to duplicate those furnished
in the Planned Maintenance System (PMS). In case of conflicts, the PMS documentation takes
precedence. Such conflicts should be reported immediately on the user comment sheet in
accordance with the maintenance procedures for this manual."
3.6.3.2 Scheduled maintenance action index. This index shall include all scheduled performance
procedures. The index shall be tests and preventive maintenance tabulated as follows:
a. Column 1, Periodicity. This column shall contain an alphanumeric list of all maintenance
actions contained in the chapter. The following periodicity symbols, as appropriate, shall be
used in the order of increasing periodicity as listed in Table II.
TABLE II. Periodicity symbols.
INTERVAL
SYMBOLS
Daily
D
Weekly
W
Monthly
M
Quarterly (3 months)
Q
Semiannually (6 months)
S
Annually
A
Overhaul cycle
C
As specified (explain circumstances)
R (note 1)
1. An R periodicity shall be preceded by a recommended calendar periodicity (for example,
DR, WR, MR, and so forth).
b. Column 2, Maintenance action. This column shall list the maintenance action which
corresponds to the periodicity number in column 1.
c. Column 3, Reference. This column shall state the paragraph number that contains the
procedure listed in column 2.
3.6.3.3 Scheduled test procedures. Include the detailed procedures for setting up and
performing complete system tests. Each procedure shall be numbered and titled to clearly define
the test action and the output to be tested.
3.6.3.3.1 Scheduled performance tests. These tests shall contain step-by-step procedures
necessary to verify that the equipment is operating within standards in all modes of operation and
shall contain the following:
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