ITEM TOOLKIT

Chapter 10 MainTain 225
CHAPTER 10
Maintain
A comprehensive design tool for calculating MTTR, Maintain conforms to maintenance standards established in MIL-
HDBK-472, Procedure V, Method A.
This chapter:
1. Introduces Maintain system
2. Describes Toolkit’s Maintain features
3. Outlines an example Maintain System
4. Describes the Maintain Editor Screen, Toolbars and Shortcut Keys
1. Introduction
Maintain is an engineering tool to aid in Maintainability Prediction. It provides an integrated environment for prediction of
the expected number of hours that a system or device will be in an inoperative or "down state" while it is undergoing
maintenance.
Maintain utilizes techniques specified in MIL-HDBK-472 Procedure V Method A to predict maintainability in quantitative
terms.
The recommended application of this technique is to perform the analysis as early as possible during the design phase. This
prediction should also be updated continuously as the design progresses to assure a high probability of compliance with
specified requirements. Maintain facilitates and eases this analysis and iteration of it by implementing this technique in a
32Bit Windows desktop application.
Using Maintain early in a project design provides a sound basis for development. Use it throughout the project to stay on
development schedules and remain in compliance with client requirement. Use it consistently to maximize productivity and
ensure ongoing success.
Mission-critical operations depend on the continuing function of systems but all systems are affected by time, use and
obsolescence. These factors can seriously affect end-users timelines and productivity.