Communications Flashcards

1
Q

How many VHFs are installed and what are each dedicated to?

A

Three installed.
VHF 1&2 for voice communications.
VHF 3 dedicated to ACARS, but maybe be used as a voice radio for backup.

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2
Q

When is CVR activated and deactivated?

A

Activated:
-for 5 minutes when AC electrical system is first activated.
-after the first engine start.
-anytime in flight

Deactivated 5 minutes after last engine shutdown.

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