MIL-STD-1798C
3. DEFINITIONS.
Definitions applicable to this standard are contained in the following subparagraphs.
3.1 Aborts.
Aborts are the results of component failures. All aborts will be investigated and the cause eliminated. Preventive maintenance will be applied where possible and/or overhaul procedures updated to ensure reliability is restored.
3.2 Analysis.
Analysis is the diagnostic effort that aims to predict system response to typical conditions encountered during operational use. This effort may include solution of equations, performance of simulations, evaluation and interpretation of charts and reduced data, and comparisons of analytical predictions versus test data. The normal reduction of data generated during ground and flight tests is not included. This effort is usually performed by the contractor.
3.3 Bad Actors Program.
The Bad Actors Program identifies components which exhibit unusual levels of repeat failures of specific serial number components.
3.4 Bulletin boards.
Bulletin boards are internet web-sites maintained by the Program Offices for users and maintainers to ask questions and post comments.
3.5 Cannibalization.
Cannibalization (CANN) is the removal of installed operational equipment for repair of another asset due to spare part shortage.
3.6 Critical Application Item (CAI).
Critical Application Item (CAI) is a broad term defined by the Defense Logistics Acquisition Directive, DLAD Revision 5, as "items whose failure could affect mission, performance, readiness, or safety"; and as "an item that is essential to weapons performance, operation, the preservation of life, or safety of operating personnel, as determined by the military services." The subset of CAIs whose failure could have catastrophic or critical safety consequences is called "Critical Safety Items (CSI)." This leaves the remaining CAIs to be essential to weapons system performance.
3.7 Critical Safety Item (CSI).
The DLAD defines CSIs as a "subset of a larger category of parts known as CAIs; and "CSIs are parts whose failure potentially can cause loss of life, serious injury, loss of an aircraft, or significant damage to an aircraft or associated equipment."
A CSI is a part, assembly, installation equipment, launch equipment, recovery equipment, or support equipment for an aircraft or aviation weapons system that contains a characteristic any failure, malfunction, or absence of which could cause a catastrophic or critical failure resulting in the loss or serious damage to the aircraft or weapons system, an unacceptable risk of personal injury or loss of life, or an uncommanded engine shutdown that jeopardizes safety. Damage is considered serious or substantial when it would be sufficient to cause a "Class A" accident or a mishap of severity category I. The determining factor in CSIs is the consequence of failure, not the probability that the failure or consequence would occur. The CSI designation is applicable
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