When the Captain's NORM/EMER switch is set to EMER, what happens?

When the Captain's NORM/EMER switch is set to EMER, what happens?

• A. Connects the Captain's headset to VHF COMM 1 and VHF NAV 1
• B. Connects the Captain's headset to VHF COMM 2 and VHF NAV 2
• C. Disconnects the Captain's headset
• D. Routes audio to the cabin interphone

Answer: (A)

Emergency situations require clear, priority access to the most important radio channels. When the Captain’s NORM/EMER switch is set to EMER, the captain’s headset is wired directly to the primary VHF radios: COMM 1 and NAV 1. This ensures the captain can both communicate with ATC and monitor the main navigation audio without interference from other audio paths, giving immediate, reliable access to essential information. If the switch were routed to other radios or left in a normal path, critical communications could be delayed or obscured, which is why EMER mode focuses the captain’s headset on the primary channels.

Emergency situations require clear, priority access to the most important radio channels. When the Captain’s NORM/EMER switch is set to EMER, the captain’s headset is wired directly to the primary VHF radios: COMM 1 and NAV 1. This ensures the captain can both communicate with ATC and monitor the main navigation audio without interference from other audio paths, giving immediate, reliable access to essential information. If the switch were routed to other radios or left in a normal path, critical communications could be delayed or obscured, which is why EMER mode focuses the captain’s headset on the primary channels.