ADS-79D-HDBK, AERONAUTICAL DESIGN STANDARD: HANDBOOK FOR CONDITION BASED MAINTENANCE SYSTEMS FOR US ARMY AIRCRAFT SYSTEMS (07-MAR-2013)

ADS-79D-HDBK, AERONAUTICAL DESIGN STANDARD: HANDBOOK FOR CONDITION BASED MAINTENANCE SYSTEMS FOR US ARMY AIRCRAFT SYSTEMS (07-MAR-2013)., This Handbook describes the Army�s Condition Based Maintenance (CBM) system and defines the overall guidance necessary to achieve CBM goals for Army aircraft systems and Unmanned Aircraft Systems (UAS). The Handbook contains some proven methods to achieve CBM functional objectives, but these suggested methods should not be considered to be the sole means to achieve these objectives. The Handbook is intended for use by: a. Aircraft life cycle management personnel defining guidance for CBM implementation in existing or new acquisition programs. This Handbook should be used as a foundation for program detail guidance for CBM to ensure that the resulting program meets Army requirements for sustained airworthiness through maintenance methods and logistics systems. b. Contractors incorporating CBM into existing or new acquisition programs for Army aircraft system equipment. In most cases, a CBM Management Plan should be submitted to the Government as part of the Statement of Work (SOW) for the acquisition, as required by the Request for Proposal (RFP) or Contract. The management plan should apply to aircraft systems, subsystems and the basic aircraft. The management plan will outline the contractor�s proposed methods for achieving CBM goals listed in the RFP and the management control actions which will guide implementation. 3. This document provides guidance and reference standards to be used in development of the data, software, and equipment to support CBM for systems, subsystems, and components of US Army aircraft systems and, in the future, UAS. The purpose of CBM is to take maintenance action on equipment where there is evidence of a need. Maintenance guidance is based on the condition or status of the equipment instead of specified calendar or time based limits, such as Component Retirement Time, while not increasing the system baseline risk. This Design Handbook accomplishes that goal by describing elements that enable the issue of CBM Credits, or modified inspection and removal criteria of components, based on measured condition and actual usage. This adjustment applies to either legacy systems with retro-fitted and validated CBM systems as well as new systems developed with CBM as initial design requirements. These adjustments can either decrease or increase the component�s installed life, depending on the severity of operational use and the detection of faults.