MIL-STD-196F
J. Application of the JETDAS is amplified as follows:
(1) Other departmental designations may be replaced by JETDAS type designations.
(2) US Communications Security (COMSEC) materials that are under the National Security Agency (NSA) Telecommunications Security (TSEC) Nomenclature Systems will not be re-designated under JETDAS.
(3) Revisions of the JETDAS will not require re-designation action.
k. Matters of controversy which cannot be resolved by the DODCP and DCPs will be referred to through normal military department administrative channels.
5.4 Application. The JETDAS is applicable to exploratory development, advanced development, engineering development, preproduction and production models of electronic materiel.
5.5 Nomenclature development. The originator shall recommend nomenclature (both item name and type designator).
5.6 Item name. Every effort shall be made to select an approved item name from the H6. When an appropriate name does not appear in H6, a new name shall be developed in accordance with ASME Y14.100.
5.6.1 Grandfathering item names. Due to the JETDAS automation, grandfathering non-approved item names will be allowed for previously approved nomenclature.
5.7 Type designator. The type designator portion of the assigned nomenclature is definitive in that it will never be duplicated or changed. It will always apply to one specific item. All subsequent models and variables of that item will have the same number, with modification letters added, when interchangeability is maintained. Indicator letters will be selected from tables I, II, or III as applicable.
5.8 Type designators for definitive systems, subsystems, centers, centrals and sets. A type designator assignment for a definitive system, subsystem, central, center or set consists of an AN, a slant bar (solidus), a series of three letters, a dash and a number. For example, an appropriate designator would be AN/ARC-73 (see table I).
5.9 Type designators for definitive groups. All groups are identified by two indicator letters selected from table II as applicable (e.g., OD, OE, OJ, OR, etc.). The type designator for a group consists of the group indicator, a dash, a number, the slant bar (solidus), and the type designator for the equipment it is "part of" or "used with". When the group is known to be peculiar to a specific equipment, for example, part of the AN/TPN-30, with no known potential for other use, the type designator after the slant should be OK-414/TPN-30. When the group may have
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