Điện và Điện tử HK

In order to talk to a VHF station when wearing an oxygen mask, the flight crew use:

• Radio Transmission (RT) switch on the ACP (RAD position)

• Push To Talk (PTT) switch on the control column or side-stick

• Either RT switch on the ACP or PTT on the side stick/control column

If there is a malfunction (transmission or reception) in Captain ACP, his audio

equipment can be transferred to the overhead ACP:

• Automatically

• Manually via audio switching to CAPT 3

• Manually via audio switching to F/O 3

Each pilot can connect his hand-held microphone (hand-mike) to the flight interphone

system via the ACP by:

• A. Selecting the FLT pushbutton

• B. Switching the Radio Transmission (RT) switch to INT

• C. Releasing the corresponding knob

• Tin t thì chọn B

Passenger Address (PA) system is to give information to passengers from:

• Cockpit or cabin crew signals which is priority-controlled by AMU

• Cockpit or cabin crew signals which is priority-controlled by CIDS

• Cockpit or cabin crew signals, pre-recorded announcement, boarding music controlled by

  AMU

Loudspeakers in cabin will give output signals according to a different priority to

prevent a mixture of the audio signals. Chimes generated by PA system will:

• Always sound together with other audio signals

• Always sound at the highest priority

• Always sound at the lowest priority

Volume level of loudspeaker will be automatically increased when:

• At least one engine is started (via engine oil pressure switch)

• The oxygen masks are released after a cabin decompression (via 14,000ft. pressure

  switch)

• engine oil pressure switch or 14,000 ft. pressure switch is activated

When the Captain presses the PA knob on his ACP (the light goes off), loudspeakers in

cockpit will:

• Not sound Flight crew’s and Cabin crew’s announcement to passengers

• Not sound Flight crew’s announcement to passengers

• Cabin crew’s announcement to passengers

In order for the Solid state CVR to store the last 120 minutes of the flight in memory, it

receive inputs from:

• 03 channels

• 04 channels

• 05 channels

On ground, the CVR starts recording:

• Automatically when all engines are completely started

• Automatically when aircraft is energized

• By pressing a pushbutton on the control panel

All data recorded in the CVR can be erased:

• When the aircraft is on ground and the parking brake is set

• Whenever you press & hold the ERASE pushbutton on the control panel

• Automatically to keep the privacy of the crew after engines are shut down