This document is intended to help aircraft manufacturers and 
the suppliers of aircraft electronic systems assure that 
electronic airborne equipment safely performs its intended 
function. The document identifies design life cycle processes 
for hardware that includes line replaceable units, circuit 
board assemblies, application specific integrated circuits 
(ASICs), programmable logic devices, etc.  It also 
characterizes the objective of the design life cycle processes 
and offers a means of complying with certification requirements.