What standard must SATCOM aircraft avionics systems conform to?

The correct choice is ARINC 741, which is a standard specifically related to satellite communications (SATCOM) systems in aircraft avionics. ARINC (Aeronautical Radio, Incorporated) develops and publishes standards that focus on the technical requirements that must be met for avionics equipment to operate safely and efficiently in aviation environments.

ARINC 741 defines the interface requirements, communication protocols, and performance standards necessary for SATCOM systems, ensuring compatibility and functionality across different aircraft platforms and satellite communication providers. Compliance with this standard is critical for manufacturers and operators to ensure that their avionics systems can reliably connect with satellites and provide necessary communications for flight operations including voice, data, and other services.

While FAA Safety Regulations, ICAO Standards, and ITU Recommendations all pertain to various facets of aviation safety, operational regulations, and telecommunications, they do not specifically address the detailed specifications required for SATCOM avionics systems the way ARINC 741 does. Thus, understanding the significance of ARINC 741 is essential for anyone involved in the design, implementation, or operation of SATCOM technology within aircraft.