Blank space resulting from the deletion of
text, an illustration or a table.
Correction of minor inaccuracies, such as
spelling, punctuation, relocation of material, etc., unless
information and procedures.
1-11. AIRCRAFT DESIGNATION SYSTEM.
The designation system prescribed by AR 70-50 is
used in aircraft designations as follows:
Basic mission and type symbol
1-12. USE OF WORDS SHALL, WILL, SHOULD, AND
Within this technical manual the word "shall" is
used to indicate a mandatory requirement. The word
"should" is used to indicate a nonmandatory but
preferred method of accomplishment. The word "may"
accomplishment. The word "will" is used to express a
declaration of purpose and may also be used where
simple futurity is required.
1-13. PLACARD ITEMS.
Where applicable, placarded items (switches,
controls, etc.) are shown throughout this manual in