Purpose of This Report
This document sets forth general philosophy, basic guidance andcertain specific recommendations concerning the design and use ofBITE. It is intended that this document will provide a bettermutual understanding among the designers and users of BITE with aview toward achieving an optimum balance among the critical factorsof BITE effectiveness, cost and complexity.
This document also includes a description of a Centralized FaultDisplay System (CFDS). The CFDS was conceived to provide access toindividual LRU BITE capabilities from a centralized location (thecockpit). The purpose of the CFDS is to accumulate fault data,present (on demand) this data to a maintenance operator, and assisttroubleshooting by performing diagnostic tests and performingverification testing after installation of a replacement unit. TheCFDS is comprised of the BITE portions of avionic subsystems (onlythose included in the system), a centralized display unit, and aninterface unit.
This document discusses the role of BITE in the airlines’maintenance concept and the BITE characteristics desirable in allavionic equipment. Beyond the guidance applicable to BITE ingeneral, it is the intent of this document to provide specificguidelines for the equipment which make up the CFDS to providefor:
• Storage of in-flight fault data in appropriate LRUs for shopuse.
• Reporting of fault status in the air and on the ground.
• Ground test capability for isolating faulty LRUs, performanceverification and system level testing.
• Storage of total subsystem fault data in a transportablemedium (optional).
With the exception of In-Flight reporting, the term “BITE”, asused herein, encompasses all of the above maintenance functions,whether the unit is included as part of the CFDS or not.
Airframe and equipment designers are encouraged to takeadvantage of this guidance information starting with the earliestphases in the design of new equipment. Users may also find thisinformation helpful in standardizing maintenance procedures and insecuring appropriate recognition for such procedures from theregulatory agencies. It is particularly important that the guidanceset forth herein should be considered in the overall perspective ofthe users’ needs, rather than some more limited objective
- Edition:
- 88
- Published:
- 09/30/1988
- Number of Pages:
- 92
- File Size:
- 1 file , 430 KB
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