Downloaded from https://www.everyspec.com ADS-79D-HDBK FIGURE 3. Mindmap of how to use ADS-79D-HDBK Figure 4 shows a systematic approach to consider incorporation of CBM into an existing aircraft. Using existing data from reliability and maintenance, safety and operational performance, life cycle sustainment analysis should be performed to evaluate the system performance. If the aircraft is sufficiently deficient to warrant further analysis, basic root cause analysis determines the cause of system‘s performance degradation. From this root cause analysis, FMECA can identify a candidate list of components and associated faults that are candidates for CBM.
Further analysis of the faults and associated failure modes can determine the most effective means to sense the faults and develop the means to detect and identify the faults through sensor signal processing. The existing sensors and data collection system onboard the aircraft should be reviewed for suitability (using the guidance in the main body of the ADS as well as Appendices C, D and E for guidance on sensors, CIs and data management). If the existing system does not provide sufficient sensors and data for fault detection, Appendices C and D contain more detailed guidance. 30