ABSTRACT

ARINC Specification 419, ‘‘Digital Data Compendium,” provides detailed descriptions of the various interfaces used in the ARINC 500 series of avionics standards prior to 1980. ARINC Specification 419 is often incorrectly assumed to be a standalone bus standard. ARINC Specification 419 provides a summary of electrical interfaces, protocols, and data standards for avionics built prior to the airlines’ selection of a single standard, i.e., ARINC 429, for the distribution of digital information aboard aircraft.