During this correct operation, no repair is required or performed, and the system adequately follows the defined performance specifications. It focuses on what can be done to achieve satisfactory levels of RAM and how to assess RAM. a. Since Am includes the entire system inventory and life-cycle and all categories of downtime it will usually be difficult for a system to achieve an Am goal that is equal to or higher than an Am requirement defined for a smaller group of systems, shorter time period and limited categories of downtime. TASK NUMBER 5f. It supports the Reliability KSA, which in turn supports the Availability KPP. Determining the optimum value for Operational Availability requires a comprehensive analysis of the system and its planned use as identified A good way to look at the relationship between Am and Ao is to view Am as a function, (together with many other variables), of Ao. The LCL evaluates the impact on Operational Availability and Cost of implementing original policy instead of least-cost recommendations. In other words, the design of the system will determine how much preventive maintenance is required and how long it will take. f. The Materiel Availability KPP must apply to the entire fielded inventory of systems, the entire life cycle of the system and incorporate all categories of downtime such as depot-level and … being used? Those criteria are: Guidance from OSD and the Joint Staff do not mandate particular methods for developing estimates of Am but they do make clear the need for programs to demonstrate that the Sustainment KPP goal has been developed after comprehensive and thorough analysis that considers all factors impacting the Sustainment KPP. Have surge/deployment acceleration requirements been identified? System testing, both Developmental and Operational Testing, can be used to obtain data on some of the variables that make up Am; e.g. [Identify the two components of "Availability" as they apply to the KPP] [Remediation Indirectly. Ultimately, availability is uptime divided by total time. Reliability is the ability of a system or component to perform its required functions under stated conditions for a specified period of time. Relationship between lead OTA and participating OTAs. operational availability over extended time periods even for low-reliability systems, but it will also result in significant costs, the result of replacing most parts prematurely and underutilizing their service life. If The DAU Glossary, also referred to as the Glossary of Defense Acquisition Acronyms and Terms, reflects most acronyms, abbreviations, and terms commonly used in the systems acquisition process within the Department of Defense (DoD) and defense industries. A number of different methods can be used to perform analysis of Materiel Availability. Step 1: Mean Time Between Failure (MTBF) MTBF is a measure of of reliability. The term "baseline" is defined in the Defense Acquisition University Glossary as a "…quantity or quality used as a starting point for subsequent efforts and progress measurement…” Within that definition there are several types of baselines. Also included is an optional consideration for Logistics Footprint. Operational Availability is defined as Uptime divided by Uptime plus Downtime. Please note that you should expect to receive a response from our team, regarding your inquiry, within 2 business days. To calculate system availability for a certain period of time, divide an asset’s total amount of uptime by the sum of total uptime and total downtime. As with many other metrics, particularly those used in a performance-based product support—or PBL—environment, care must be taken to appropriately define the parameters of the lower-order Mean Downtime metrics and achieve a common understanding of that definition among the various stakeholders. For example, there The Sustainment KPP, Availability, is derived from the operational capability requirements of the system, assumptions for use, and the planned Sustainment strategy. Determining the optimum value for Operational Availability … Since testing alone cannot insure that these system parameters, attributes and requirements will be met by any given system design and support strategy, it is important for program managers to understand how system analysis, modeling and simulation can be used to help insure the goals of these parameters, attributes and requirements are satisfied. PROGRAM ELEMENT NUMBER 6. PROJECT NUMBER 5e. The Materiel Availability is not interchangeable with the Operational Availability metric that is a KPP requirement for many DoD systems. Rm is far more important in determining the level of availability that is achievable than any other component of logistics system. The Defense Acquisition Guidebook, Chapter 5.1.1.2 defines mean downtime as the average time an end item is unavailable to perform its assigned mission after it experiences unscheduled or scheduled maintenance actions. λ λ. What models are being used to establish and track the KPP. This does not mean, however, that these two metrics are unrelated. The Defense Acquisition Guidebook, Chapter 5.1.1.2 defines mean downtime as the average time an end item is unavailable to perform its assigned mission after it experiences unscheduled or scheduled maintenance actions. operational support in a timely manner, and at a fair and reasonable price.1 This guide supports that objective. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army … Operational Availability is a Key Performance Parameter (KPP) that the weapon system is suitable for production and sustainable through its life cycle. 10 Lesson: Measures of Combat Capabilities Enhanced by RAM Page 9 of 14 Measures of Combat Capabilities Enhanced by RAM Image Description: Operational Availability formula, which is “A” sub “o” is equal to MTBM divided by the sum of MTBM and MDT. These are the distinguishing features of the Materiel Availability metric that differentiate it from the more familiar Operational Availability metric (uptime/uptime downtime). The best way to view the relationship between Am and Ao is to see Am as a function of Ao, together with many other variables. Specific time categories (and terminology) included in uptime and total time for computing "operational" availability may be organizational dependent. Summary. With the establishment of the Sustainment KPP and KSAs, the LCL will have to take the time … Stochastic simulation modeling helps overcome some of the problems inherent in making assumptions about the nature of the variables that contribute to Am. sibilities for the reliability, availability, and maintainability of its materiel. An adequate Ao is one of the essential building blocks to achieving a high level of availability of total fielded inventory throughout the life cycle of a fielded system. Is downtime caused by failure addressed? This paper aims at defining the different types of availabilities based on a common approach developed by It includes logistics time, ready time, and waiting or administrative downtime, and both preventive and corrective maintenance downtime. Only after a system has completed fielding and is in the Operations and Support phase of its life cycle can data be collected to produce estimates of actual Am. Are the values used for failure rates supported by the analysis? Objectives: Explain how a product's R&M characteristics will affect the measures of logistics support and ultimately the cost of support. (1) For MOT&E, the lead developing/acquisition Service’s OTA will be the lead OTA . Are sources of data cited? It doesn t. It has no bearing on the Availability KPP. In understanding of the Sustainment Key Performance Parameter (KPP) for Materiel Availability (Am), the Key System Attribute (KSA) for Materiel Reliability (Rm) and how both of these relate to requirements for Operational Availability (Ao) it is important for program managers to focus on reliable system designs, effective life cycle support strategies, and adequate testing of these system parameters and attributes. Is there a specific definition established for failure? a. View Mod 6pre.pdf from DAU ACQ 202 at Franklin University. Operational Availability requirements always apply to a limited number of systems fielded to a particular echelon of operational units and frequently incorporate only unscheduled maintenance downtime due to reliability failures. Operational availability is used to evaluate the following performance characteristic. MBTF measures the … 2. Since Am can be viewed as a function of Ao, programs need to carefully assess how they establish goals for Am and how these goals relate to program requirements for Ao. As a KPP, an Acquisition Program Manager must calculate A o and demonstrate that the Operational Availability is defined as Uptime divided by Uptime plus Downtime. Operational Availability Operational Availability (Ao) is the Mean Time Between Failures (MTBF) divided by the sum of Mean Time Between Failures (MTBF), Mean Time to Repair (MTTR) and Mean Logistics Delay Time (MLDT). A poor Ao will have a negative impact on Am that will be difficult to overcome regardless of strategies for operational readiness floats and national maintenance. Does the metric clearly define and account for the intended service life, from initial placement into service through the planned removal from service? The Maintenance Division of the Logistics Directorate of the Joint Staff has published a guide to the Sustainment KPP that outlines criteria that the Joint Staff will use to determine if a program has done an adequate job of implementing the requirements for the Sustainment KPP (Am). Instantaneous (or Point) Availability 2. – The KPP and supporting KSAs ensure early sustainment planning, enabling the requirements and acquisition communities to provide a capability solution with optimal availability and reliability to the warfighter at an affordable life cycle cost. 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operational availability formula dau

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