Question

When a DCU generates an EICAS message, the data is sent to the:

a) Flight Management Computer (FMC)
b) Electronic Flight Instrument System (EFIS)
c) Engine Indicating and Crew Alerting System (EICAS)
d) Automatic Dependent Surveillance-Broadcast (ADS-B)

Answer 1

A Data Concentrator Unit (DCU) sends EICAS messages to the Electronic Flight Instrument System (EFIS) to alert pilots of engine and system information.

Step-by-step explanation:

When a Data Concentrator Unit (DCU) generates an Engine Indicating and Crew Alerting System (EICAS) message, the data is sent to the Electronic Flight Instrument System (EFIS) for display to the pilots. The DCU serves as a central point in an aircraft's avionics system where data from various sensors is collected, processed, and then distributed to the appropriate systems or displays, such as the EICAS. It is important to note that the EICAS itself is a subsystem designed to display engine and system information to the crew, thus when the DCU generates an EICAS message, the data is meant for the EICAS subsystem, but the actual displays that the pilots interact with fall under the umbrella of the EFIS.