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Document FAA FAA-HDBK-006 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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FAA FAA-HDBK-006 Document Information:
Title
Reliability, Maintainability, and Availability (RMA) HANDBOOK
Federal Aviation Administration
Publication Date:
May 1, 2006
Scope:
Most of the systems comprising the National Airspace System
(NAS) fall into one of three general categories:
• Automated information systems that continuously integrate and
update data from remote services to provide timely decision-support
services to Air Traffic Control (ATC) specialists
• Remote and distributed elements that provide services such as
navigation, surveillance, and communications to support NAS ATC
systems
• Infrastructure systems that provide services such as power,
heating, ventilating, and air conditioning (HVAC) systems, and
telecommunications to support NAS facilities
This document primarily allocates NAS-Level requirements to the
information systems that provide consolidated ATC services. These
systems involve software-intensive air traffic control automation
and communications capabilities. They have stringent availability
requirements and, as a consequence of the large amounts of custom
software that must be developed for them, entail significant cost
and schedule risks. These programs provide the most critical
operational services and have the most visibility. For these
reasons, it is appropriate that they be given the most attention in
this handbook.
Remote and distributed elements achieve the necessary overall
availability through their reliance upon diversity tailored to meet
specific regional considerations. The availability of the
individual elements comprising these systems is furthermore
determined by life-cycle considerations, not by top-down
allocations from NAS-level requirements.
Because infrastructure systems such as power systems, heating
ventilation and air conditioning (HVAC) systems typically violate
the independence assumption underlying RMA calculations, they can
directly cause failures in the systems they support. Therefore,
top-down allocations of availability requirements are not
appropriate for these systems. Instead, the aviation community
needs to prepare and standardize a new, well defined set of
configurations to use with infrastructure systems.
This handbook is for guidance only and cannot be
cited as a requirement.
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