Service Interphone Component Locations

SERVICE INTERPHONE SYSTEM

General

The ground crew uses the service interphone system to talk to each other and to the flight crew. Service interphone jacks are at different locations on the airplane.

The flight attendants use the service interphone system to speak with each other and the pilots.

Abbreviations and Acronyms

· AAU - audio accessory unit

· ACP - audio control panel

· ampl - amplifier

· APU - auxillary power unit

· att - attendant

· bat - battery

· capt - captain

· dc - direct current

· flt - flight

· fwd - forward

· inph - interphone

· lts - lights

· mic - microphone

· PA - passenger address

· PTT - push-to-talk

· REU - remote electronics unit

· v - volt

· warn - warning

General

The service interphone system is for these personnel:

· Flight crew

· Attendants

· Ground crew.

The flight crew selects the service interphone function from the audio control panel (ACP). Flight interphone microphones send audio to the remote electronics unit (REU). Flight interphone headsets and speakers get audio from the REU.

The flight crew can also use a handset to talk on the service interphone system. The interphone jack connects to the system without ACP control.

The attendants operate a handset to connect into the system. An attendant panel connects the handset to the REU.

The ground crew microphones connect into the system through the service interphone switch. You must turn on the service interphone switch to operate the system from the service station jacks. The headset gets audio from the REU.

The REU does these functions:

· Combines audio from the microphones

· Amplifies the audio signal

· Sends audio to handsets, headsets, and speakers.

Service Interphone Component Locations

The service interphone switch is on the P5 aft overhead panel. The interphone jack for the handset is on the aft face of the P8 aft electronic panel. Handset Locations

These locations have handsets:

· The forward attendant station - below the attendant panel, near the forward entry door.

· The aft attendant station - below the attendant panel, near the aft entry door.

Дата добавления: 2015-11-14