MIL-DTL-81748E(AS)
b. Format changes;
c. Grammatical changes (unless safety, equipment damage, flight limitation, etc, are
involved);
d. Typographical errors;
e. General non-procedural information;
f. Naval Air Training and Operation Standardization (NATOPS) flight and tactical
manuals. These are excluded from this specification. Refer to OPNAVINST 3710.7.
3.3 RAC/IRAC Determination. The determination to issue a RAC or an IRAC shall be
made by the cognizant TM preparing activity in coordination with the program Technical Data
Logistic Element Manager (LEM). Formal Revisions and Changes are the preferred means of
distributing change data to the user community in order to maintain effective configuration
control throughout the TM update and distribution process, and for ease of use by the maintainer.
RACs provide similar benefits to the maintenance community, and are preferred where
circumstances warrant their use.
3.3.1 RACs. RACs are complete, formal changes to applicable technical manuals. In
addition to the pertinent technical content change information, RACs provide all the associated
technical manual format data, such as title page, front matter, indices, etc. RACs shall be used to
disseminate urgent TM change information when funding, contractual and programmatic
conditions make their use practical. Distribution of electronic and hard copy RACs shall be in
accordance with current NATEC web-posting guidelines found on NATEC Technical Manual
Application System (TMAPS) website. The affected program's LEM shall coordinate any
deviation from NATEC requirements for initial printing and distribution.
3.3.2 IRACs . IRACs may be used when funding, contractual and programmatic
circumstances make the use of RACs impractical. Formal incorporation of an IRAC into the TM
is still required and must be accomplished by a formal change, revision or RAC. IRACs are of
two (2) types:
a. Type A: shall be used to disseminate information for distribution by Naval Message.
Upon receipt of an applicable Type A IRAC, technical manual users are directed to annotate the
IRACs applicability to effected pages and maintain the IRAC behind the title page of the manual.
Generally, Type A IRACs provide information that applies to text and routine tabular
information. Type A IRACs shall not be used for any form of illustrations, schematics, wiring
diagrams, or other graphics images.
b. Type B: shall be used to disseminate information that includes illustrations,
schematics, wiring diagrams, and other forms of graphic data that cannot be included in a Type
A IRAC. Type B IRACs are preceded with a naval message notification. Technical manual
users are directed to maintain the notification message behind the title page of applicable manual
until receipt of Type B IRAC. Upon receipt of an applicable Type B IRAC, technical manual
users are directed to insert enclosed change pages in accordance with NAVAIR 00-25-100. The
notification message is removed and the applicable cover letter is maintained behind the existing
title page and additional effected pages are annotated as applicable. Type B IRACs shall be
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