SMC-T-007 (TAILORED), AFSC SPACE AND MISSILE SYSTEMS CENTER TAILORING: TAILORING OF EIA-649-1: DEFINITION OF MAJOR (CLASS I) ENGINEERING CHANGE PROPOSAL (15-MAY-2015)
SMC-T-007 (TAILORED), AFSC SPACE AND MISSILE SYSTEMS CENTER
TAILORING: TAILORING OF EIA-649-1: DEFINITION OF MAJOR (CLASS I) ENGINEERING CHANGE PROPOSAL (15-MAY-2015)., This new issue SMC tailoring comprises the text of The Aerospace Corporation report number TOR-2015-01904.
This tailoring document remedies a requirements gap in the industry consensus standard, EIA-649-1:
2015. Specifically, this tailoring provides a contractually compliant definition for Major (Class I)
Engineering Change Proposal (ECP). The goal of this tailoring is to ensure that the standard is complete
and stands on its own.
The terms ‘major change’ and ‘minor change’ are used in EIA-649-1 to describe categorization of change
data to be provided to the acquirer. These terms are used in
* Clause 3.1.1, Monitoring Configuration Management Procedures, implementing ANSI/EIA-649
Principle CMP-6, cites minor change/variance and minor change/variance as two potential metrics.
* Clause 3.3.1, Engineering Change Proposal (ECP), implementing ANSI/EIA-649 Principles CCM-3,
3, 4, and 53, provides requirements for ECPs to indicate the class of ECP, viz. Major and Minor.
* Clause 3.3.2 requires the use of the contents of an ECP form (DD 1692 or equivalent) to document
engineering changes including the class of ECP (box 5 of DD 1692). Clause 3.3.2 also provides the
relationship between major/minor change categories and Class I/II categories with major change
being the same as a Class I change and minor change being the same as Class II change.
The definition for Major (Class I) Change is not provided in EIA-649-1, but reference is made to DD
Form 1692 where the definition for Major (Class I) ECP is in the instructions to the form. Minor (Class
II) is defined within the standard as changes that do not meet the criteria of Major (Class I), and are
administrative or documentation clarifications and corrections.
For that reason, this tailoring document establishes contractually compliant definitions to supplement the
existing text of EIA-649-1 using the Major (Class I) ECP definition from the latest version of DD 1692 as
the basis.