EMB ERJ 170/175 ER/LR
Human-Machine Interface; Situational Awareness; Training / Qualification
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Provided Assistance
Human Factors; Software and Automation
Inadvertent Code 7500 message via Aircraft Communication Addressing and Reporting System (ACARS) message. During the flight the Captain was discussing with the First Officer about the data link pages in the Multi-Function Control Display Unit (MCDU). One of those pages is the covert declaration of aircraft hijacking or Code 7500. The Captain displayed the page and explained how to read the page and then exited out of the page without entering any information or sending the page. Shortly afterwards our flight received a query from ATC asking if the aircraft was squawking a special code to which the crew replied no and confirmed assigned transponder code. Upon parking; the flight crew was informed by dispatch that a message with the default information from the Code 7500 page had been received and asked if everything was ok. Airport Security Manager also confirmed with the crew of their status.
Inadvertent Code 7500 message via Aircraft Communication Addressing and Reporting System (ACARS) message. During the flight the Captain was discussing with the First Officer about the data link pages in the Multifunction Control Display Unit (MCDU). One of those pages is the covert declaration of aircraft hijacking or Code 7500. The Captain displayed the page and explained how to read the page and then exited out of the page without entering any information or sending the page. Shortly afterwards the flight received a query from ATC asking if the aircraft was squawking a special code to which the crew replied no and confirmed assigned transponder code. Upon parking at the gate the flight crew was informed by dispatch that a message; with the default information from the Code 7500 page had been received and asked if everything was ok. Airport Security Manager also confirmed with the crew of their status.
A Flight Crew reported they inadvertently squawked 7500.