Downloaded from https://www.everyspec.com ADS-79D-HDBK a. Describe how the design addresses the guidance of this ADS by citing specific references to the appropriate sections of this document and its appendices. b. Describe in detail how the CBM system functions and meets the specification requirements for end-to-end integrity. c. Specifically describe what CBM credits are sought. (examples are extended operating time between maintenance, overhaul / inspection) d. Describe how the CBM system is tested and validated to achieve the desired CBM credits. This Management Plan may be developed either by the US Army or by the CBM system vendor/system integrator subject to approval by the US Army.
The Management Plan should be specified as a contract deliverable to the Government in the event that it is developed by the CBM system vendor or end-to-end system integrator. Also, the Management Plan for CBM design compliance should be a stand-alone document. 6. HOW TO USE THIS ADS Department of the Army policy describes CBM as the preferred maintenance approach for Army aircraft systems and this ADS provides guidance and standard practices for its implementation. Establishing CBM is a complex undertaking with inter-related tasks that span elements of design engineering, systems engineering, integrated logistics support, and user training.
The complexity and scope of the undertaking can cause uncertainty as to where or how to begin the process. The following guidance in Figure 3 is provided for two basic situations: (1) transition from the established maintenance program to CBM for an aircraft already in service, known herein as ―Legacy Aircraft‖ and (2) New Development aircraft or UAS. 6.1 CBM for legacy aircraft. Legacy aircraft with established maintenance programs should consider incorporating CBM if the existing maintenance program is not providing sufficient aircraft or system reliability at affordable cost.
CBM should be investigated and analyzed from a systems perspective to determine whether changing the maintenance program to incorporate CBM elements can reasonably achieve the four CBM goals. Using systems engineering and a total systems approach, legacy programs should establish a baseline of cost, reliability, performance and risk for the platform or system under study. The program should contain goals for improvements to these parameters to constrain the analysis and effort to design a CBM system for the aircraft which is under evaluation.
To establish the first description of the CBM system for the legacy platform, this ADS should be used in defining the requirements of the system design (Figure 4). The main body of the ADS provides guidance and descriptions of the overall system architecture and individual elements of the system needed to provide the data, analysis and basis for evaluating the maintenance needs of the aircraft or aircraft system based on the detection, identification, and evaluation of faults through data collection and analysis. The Appendices provide more detailed guidance for elements of the CBM process. Developing and validating CIs and HIs are of the utmost importance. 29