MIL-STD-1798C
controls, quality control procedures, NDT/I practices, and analytical requirements. It is not necessary to retain and track records from the material starting stock to tail number installation and reverse if the part is not designated as fracture-critical traceable.
3.25 Fracture-critical traceable part.
A fracture-critical traceable part is a safety-critical component that is either single load path or sized by durability or damage tolerance requirements. Fracture-critical traceable parts require serialization and traceability from starting stock to tail number and reverse.
3.26 Functional Hazard Analysis.
A functional hazard analysis is a subset of hazard analysis that provides a comprehensive examination of aircraft functions to identify and classify failure conditions of those functions according to their severity.
3.27 Functional Systems Integrated Database (FSID).
The database used by the reliability analysis team to record, track and analyze maintenance and component reliability data for the purpose of deciding how best to proceed to achieve MECSIP goals of safety and aircraft availability at the most economic cost across the life cycle of the aircraft. The actual form of the database is up to the needs of the program.
3.28 Hazard Analysis (HA).
A hazard analysis is the systematic process to evaluate potential conditions that can cause injury, illness, or death to personnel; damage to or loss of a system, equipment, or property; or damage to the environment. The hazard analysis contains a detailed analysis of system hardware and software, the environment (in which the system will exist), and the intended usage or application. The hazard analysis classifies failure conditions according to their
severity. Historical hazard and mishap data, including lessons learned from other systems, are considered and used.
3.29 Improbable occurrence.
An improbable occurrence is defined in AWB-013 and NAVAIRINST 5000.21B.
This is the least probable occurrence of the rate classifications presented in AWB-013 and
NAVAIRINST 5000.21B.
3.30 Inspections.
a. Detailed inspection: An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate by the inspector. Inspection aids such as mirrors or magnifying lenses may be used. Surface cleaning and elaborate access procedures may be required.
b. Surveillance inspection: A visual examination of a interior or exterior area, installation, or assembly to detect obvious damage, failures, or irregularity. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or droplight and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.
c. Special detailed inspections: An intensive examination of a specific item(s), installation, or assembly to detect damage, failure, or irregularity. The examination is likely to make
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