Downloaded from https://www.everyspec.com ADS-79D-HDBK 1. SCOPE 1.1 Scope . This document, an Aeronautical Design Standard (ADS) Handbook (HDBK), provides guidance and defines standard practices for the design assessment and testing of all elements of a Condition Based Maintenance (CBM) system, including analytical methods, sensors, data acquisition (DA) hardware, signal processing software, and data management standards necessary to support the use of CBM as the maintenance approach to sustain and maintain systems, subsystems, and components of Army aircraft systems.
This includes the process of defining CBM Debits and Credits (modified inspection and removal criteria of components based on measured condition and actual usage) resulting from CBM implementation as well as Airworthiness Debits and Credits. The document is organized with its main body associated with general overarching guidance, and appendices governing more detailed guidance arising from application of technical processes. There are four goals in the implementation of CBM: a. Reducing burdensome maintenance tasks currently required to assure continued airworthiness b. Increasing aircraft availability c. Improving flight safety d.
Reducing sustainment costs Any changes to maintenance practices identified to meet these goals shall be technically reviewed to ensure there has been no adverse impact to baseline risk. This document provides specific technical guidance for CBM to ensure the resulting CBM system is effective and poses no greater risk than the original baseline design. The functional guidance for a CBM system is intended to include: a. Engine monitoring b. Dynamic system component monitoring c. Structural monitoring d. Exceedance recording e. Usage monitoring f. Electronic logbook interface g. Electronics These functional capabilities are intended to implement CBM on all Army aircraft systems.
Future revisions will include UAS. 1