MIL-DTL-23618H(AS)
example, "all data on card (card number), including figure number (figure number) deleted." This
also applies when two back-to-back cards are deleted.
3.4.10 Renumbering. During a revision, all preface, task, and illustration cards shall be
renumbered, as necessary, to eliminate card number alphabetic suffixes and to reestablish the
correct card sequence.
3.5 Changes and revisions. PMRMs covered herein shall be changed or revised to reflect all
approved changes. Checklists shall always be revised, not changed (see 6.2.1).
3.5.1 Changes. A change is any alteration of a manual already in existence. It is
accomplished by replacement, addition, or deletion of cards, including backup cards, but not
sufficient in number to require a complete revision of the manual. Vertical change bars or the
letter "R" shall be used to highlight changes. Change bars or symbols shall not be depicted on a
complete revision.
3.5.2 Revisions. A PMRM shall be revised when the percentage of an anticipated change
plus all previously incorporated changes affect a total of sixty percent of the card faces in the
PMRM. The following criteria shall be used to determine the need for a revision:
a. A change is defined as any information that has been incorporated, deleted, or resequenced
in a PMRM since the last revision.
b. Any change to a card face except for correction of typographical errors shall be counted as
one card face.
c. Each card face affected shall be counted as one card change.
d. Only Arabic numbered cards only shall be counted for change purposes.
e. Percentage of change shall be computed utilizing the following formula:
Number of Arabic numbered card face changes X 100 = percent of change
Number of Arabic numbered cards
Example: number of Arabic numbered card face changes (200) divided by the total
number of Arabic numbered cards in the manual (300) multiplied by 100 equals 66.66
percent change.
f. Each card added or deleted shall count as one card face change. For example, if 100 new
cards are added while 100 cards are deleted, the total number of cards changed shall equal
200 cards.
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