Table 1:

Mode

Pilot Hears

Copilot Hears

Passenger

Telephone

Comments

 

 

 

Hears

 

 

 

 

 

 

 

 

Isolate

A/C Radios

Copilot and

Passenger and

“Phone Booth”

This allows the

 

Pilot Sidetone

passenger

Copilot inter-

mode

pilot to

 

(during radio

intercom

com

Pilot has exclusive

communicate

 

transmission)

Entertainment

Entertainment

use of the tele-

without the others

 

Entertainment

#1

#2

phone.

bothered by the

 

1 is Muted

 

 

In TEL, Pilot

radios. Copilot

 

 

 

 

connected to Com

and passengers

 

 

 

 

1 for PTT TX and

can communicate

 

 

 

 

receive.

and listen to

 

 

 

 

 

music

 

 

 

 

 

 

All

Pilot

Copilot

Passengers

All have access to

This mode allows

 

Copilot

Pilot

Pilot

phone through

all on board to

 

A/C Radio

A/C Radio

Copilot

Hook Switch. Pilot

hear radio

 

Passengers

Passengers

A/C Radio

access through

reception as well

 

Entertainment

Entertainment

Entertainment

TEL switch.

as talk on the

 

#1

#1

#2

All hear telephone

intercom. Music

 

 

 

 

audio if off hook.

and intercom is

 

 

 

 

 

muted during

 

 

 

 

 

intercom and

 

 

 

 

 

radio

 

 

 

 

 

communications

 

 

 

 

 

 

Crew

Pilot

Copilot

Passengers

Pilot and copilot

This mode allows

 

Copilot

Pilot

Entertainment

don’t have phone

the pilot and

 

A/C Radio

A/C Radio

#2

access, unless mic

copilot to

 

Entertainment

Entertainment

 

sel in TEL.

concentrate on

 

#1

#1

 

Passengers have

flying, while the

 

 

 

 

phone through

passengers can

 

 

 

 

Hook Switch,

communicate

 

 

 

 

Passengers hear

amongst

 

 

 

 

phone audio.

themselves.

 

 

 

 

 

 

1.6.4Entertainment Input

The audio selector panel has provisions for two separate entertainment input devices. The CD-15 remote CD player is usually installed as Music 1, and feeds the pilot and copilot positions. They operate independently in the SL15-CD. The music volume control affects the CD-15 music level only in the pilot and copilot positions.

While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while the four passengers will hear Entertainment #2. The pilot will hear entertainment 1, at a muted level. In normal operation, whenever a person speaks, or if the aircraft radio becomes active, the music will automatically mute and then will gradually return to the original listening level when the intercom or radio conversation ceases.

When in the ALL mode, pilot and copilot will hear Entertainment 1 input while all passengers will hear the Entertainment 2 source. While in the CREW mode, pilot and copilot will hear entertainment input #1 while the passengers may listen to entertainment input #2.

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