The scope of this document is to define a new avionics software loading protocol standard. It defines the software loading operations in terms of sequences of messages, and it defines the byte organization of these messages.

This document does not discuss memory management of the target. This is consistent with other software loading specifications. The erasure of NVM memory and the restoration of memory when an upload operation aborts are examples of memory management issues that are platform specific and are not specified in this standard.

Purpose

This document describes an avionics standard for software loading for simple devices over bus systems or simple networks. It is subsequently referred to as ARINC Specification 826.

The purpose of the standard is to provide a simple and efficient protocol for loading software parts to Line Replaceable Units (LRUs) on simple networks, as an alternative to:

• ARINC Report 615A: Software Data Loader Using Ethernet Interface
• ARINC Report 615: Airborne Computer High Speed Data Loader