Audio Panel/Intercom Question

[labbadabba]

The plane I most frequently fly has a KMA-28 Audio Panel an PS-1000 intercom with an ISO switch.

My question is: Is there a way that I can eliminate the radio communications for backseat PAX without removing my ability to communicate with my backseat PAX? This way, the kiddos can happily watch their iPads but still let me know if they need a potty break or if I have to quickly tell them something I can do so.

 

[Axtel4]

The Intercom Mode switch (ISO switch) will isolate the rear seat from the front seat positions. When you want to communicate the the rear seat, return the switch to the normal position.

In the ISO (Up postion) the Pilot is isolated from all passengers. In the ALL (Middle position), all are connected to the intercom. In the CREW (Down Position) the rear seats are isolated from the front seats.

So, to answer your question, you will need to move the Intercom Mode Switch from the ALL position to isolate the rear passengers from the Crew / Pilot positions. However, the rear passengers will be isolated from the radio communications.

 

[labbadabba]

The Intercom Mode switch (ISO switch) will isolate the rear seat from the front seat positions. When you want to communicate the the rear seat, return the switch to the normal position.

In the ISO (Up postion) the Pilot is isolated from all passengers. In the ALL (Middle position), all are connected to the intercom. In the CREW (Down Position) the rear seats are isolated from the front seats.

So, to answer your question, you will need to move the Intercom Mode Switch from the ALL position to isolate the rear passengers from the Crew / Pilot positions. However, the rear passengers will be isolated from the radio communications.

Thx, so when in the ISO mode, the PAX will not hear ATC or me and I cannot hear them correct? I knew that ISO cut them out of my own headset but wasn't sure how they were affected in terms of them hearing ATC or me for that matter.

 

[AggieMike88]

a tap on daddy's shoulder?

 

[Axtel4]

Thx, so when in the ISO mode, the PAX will not hear ATC or me and I cannot hear them correct? I knew that ISO cut them out of my own headset but wasn't sure how they were affected in terms of them hearing ATC or me for that matter.

Correct. From the Silver Crown Plus Pilot's Guide:

Intercom Modes:
The lower switch on the left side is a 3-position mode switch that allows the pilot to tailor the intercom function to meet the current cockpit situation.

ISO: (Up Position): The pilot is isolated from the intercom and is connected only to the aircraft radio system. He will hear the aircraft radio reception (and sidetone during radio transmissions). Copilot will hear passengers’ intercom and Entertainment 1, while passengers will hear copilot intercom and Entertainment 2. Neither will hear aircraft radio receptions or pilot transmissions.

ALL: (Middle Position): All parties will hear the aircraft radio and intercom. Crew will hear Entertainment 1, passengers will hear Entertainment 2. During any radio or intercom communications, the music volume automatically decreases. The music volume increases gradually back to the original level after communications have been completed.

CREW (Down Position): Pilot and copilot are connected on one intercom channel and have exclusive access to the aircraft radios. They may also listen to Entertainment 1. Passengers can continue to communicate with themselves without interrupting the Crew and also may listen to Entertainment 2.