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Standard

Using a System Reliability Model to Optimize Maintenance Costs A Best Practices Guide

2019-05-07
CURRENT
JA6097_201905
SAE JA6097 (“Using a System Reliability Model to Optimize Maintenance”) shows how to determine which maintenance to perform on a system when that system requires corrective maintenance to achieve the lowest long-term operating cost. While this document may focus on applications to Jet Engines and Aircraft, this methodology could be applied to nearly any type of system. However, it would be most effective for systems that are tightly integrated, where a failure in any part of the system causes the entire system to go off-line, and the process of accessing a failed component can require additional maintenance on other unrelated components.
Standard

Prognostics and Health Management Guidelines for Electro-Mechanical Actuators

2017-09-21
WIP
AIR8012
The purpose of the document is to provide the guidelines of the technological approach for developing a PHM system for EMAs with particular reference to their possible use as primary flight control actuators. It provides a basic description of the physics of the most common degradation processes,a reliability assessment and a discussion on the signals, with the associated data processing, required to build up an effective health monitoring system.
Standard

Human Factor Considerations in the Implementation of IVHM

2018-03-16
WIP
AIR6915
This Aerospace Recommended Practice (ARP) offers best practice regarding the implementation of IVHM systems taking into account Human Factors, both the vehicle crew and the maintenance staff. The document will include considerations regarding both military and civil fixed wing aircraft. Safety implications will also be addressed.
Standard

Health and Usage Monitoring System, Blade Tracker Interface Specification

2002-12-12
CURRENT
AS5393
Blade trackers measure: (a) rotor blade height and (b) lead-lag for use in a Rotor Track and Balance (RT&B) function in a Health and Usage Monitoring System (HUMS). HUMS is a generic term for a system used to measure, monitor, process, and store information relating to the functioning and usage of an aircraft's on-board primary systems, including the engine(s).
Standard

Health and Usage Monitoring System Data Interchange Specification

2006-06-23
CURRENT
AS5395
This document establishes the Rotorcraft Industry Technology Association (RITA) Health and Usage Monitoring System Data Interchange Specification. The RITA HUMS Data Interchange Specification will provide information exchange within a rotorcraft HUMS and between a rotorcraft HUMS and external entities.
Standard

Health and Usage Monitoring Metrics Monitoring the Monitor

2008-02-19
CURRENT
ARP5783
This recommended practice applies to vibration monitoring systems for rotorcraft and fixed-wing drive trains, airframes, propulsion systems, electric power generators, and flight control systems. It addresses all aspects of metrics, including what to measure, how to measure, and how to evaluate the results.
Standard

Guidelines for writing IVHM requirements for aerospace systems

2012-01-17
WIP
ARP6883
A rough outline of the document is as follows: 1. Introduction to IVHM and rationale for the document 2. Identification of different (internal and external) stakeholders. Customers, maintenance personnel, sales and marketing and finance. Systems designers, RM&S experts, etc. Need to link requirements to design rationale, including a cost-benefit-analysis. 3. Requirements breakdown structures, from high level system requirements to lower level sub-system requirements, and finally down to component specifications. 4. Links to other systems engineering processes such as V&V, architecture design, program milestones, etc. 5. Examples of good and bad requirement practices. Maybe individual case studies or an example of an entire system. 6. Conclusions.
Standard

Guidelines for the Development of Architectures for Integrated Vehicle Health Management Systems

2013-12-19
WIP
ARP6290
This SAE Aerospace Recommended Practice (ARP) provides best practices and guidance for creating an architecture for integrated vehicle health management systems. Where possible, this document will also provide references to tools to conduct architectural trades. Finally, this document will provide use cases to expose considerations and stakeholders to be included in these trades and utilization of an IVHM system (which may lead to new functional or non-functional requirements).
Standard

Determination of Cost Benefits from Implementing an Integrated Vehicle Health Management System

2014-07-07
CURRENT
ARP6275
This ARP provides insights on how to perform a cost benefit analysis (CBA) to determine the return on investment that would result from implementing an integrated Health Management (HM) system on an air vehicle. The word “integrated” refers to the combination or “roll up” of sub-systems health management tools to create a platform centric system. The document describes the complexity of features that can be considered in the analysis, the different tools and approaches for conducting a CBA and differentiates between military and commercial applications. This document is intended to help those who might not necessarily have a deep technical understanding or familiarity with HM systems but want to either quantify or understand the economic benefits (i.e., the value proposition) that a HM system could provide.
Standard

Data Interoperability for IVHM

2018-03-16
WIP
AIR6904
In order to realize the benefits of Integrated Vehicle Health Management (IVHM) within the aerospace and defense industry there is a need to address five critical elements of data interoperability within and across the aircraft maintenance ecosystem, namely • Approach • Trust • Context • Value • Security In Integrated Vehicle Health Management (IVHM) data interoperability is the ability of different authorized components, systems, IT, software, applications and organizations to securely communicate, exchange data, interpret data, use the information and derive consistent insight from the data that has been exchanged to derive value.
Standard

Condition Based Maintenance (CBM) Recommended Practices

2019-04-03
WIP
JA1013
The scope of this document is to clearly lay out the path for an organization to implement a CBM approach to maintenance. The practices will include both CBM in design and in the support phase for fielded equipment.
Standard

Atmospheric Corrosion Monitoring Informational Report

2019-02-11
WIP
AIR6970
This Aerospace Informational Report (AIR) provides guidance on existing environmental and corrosion monitoring technologies for service environments, focusing on parameters of interest, sensing technologies, existing measurement platforms, deployment requirements, and data processing techniques. Non-destructive evaluation tools are not within the scope of this report. The principal motivation of the document is to facilitate users in the specification, selection, and use of monitoring systems for assessing atmospheric corrosion in aerospace applications. The sensors and monitoring systems provide continuous time-based records of: 1) environmental parameters such as temperature, humidity, and contaminants; 2) measures of alloy corrosion; and 3) protective coating performance.
Standard

A Power Usage Metric For Rotorcraft Power Train Transmissions

2014-09-30
WIP
AIR6334
This SAE Aerospace Information Report (AIR) examines the need for and the application of a power train usage metric that can be used to more accurately determine the TBO for helicopter transmissions. It provides a formula for the translation of the recorded torque history into mechanical usage. It provides examples of this process and recommends a way forward. This document of the SAE HM-1 IVHM Committee is not intended as a legal document and does not provide detailed implementation steps, but does address general implementation concerns and potential benefits.
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