DOC AIRBUS | AMM A320FEVACUATION SIGNALING EQUIPMENT - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The evacuation signaling equipment is operated by the captain or purser in an emergency (on the ground or on water) if the aircraft has to be evacuated. The system gives a signal to the cabin crew to start the evacuation of the passengers and crew. The essential busbar supplies electrical power to the system.
** ON A/C NOT FOR ALL The evacuation signaling equipment is operated by the captain or purser in an emergency (on the ground or on water) if the aircraft has to be evacuated. The system gives a signal to the cabin crew to start the evacuation of the passengers and crew. The essential busbar supplies electrical power to the system.
2. Component Location
Location of Evacuation Signaling Components - FWD Cabin ** ON A/C NOT FOR ALL
Location of Evacuation Signaling Components - FWD Cabin ** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL Location of Evacuation Signaling Components - FWD Cabin ** ON A/C NOT FOR ALL Location of Evacuation Signaling Components - FWD Cabin ** ON A/C NOT FOR ALL | FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 2WP | SEL-EVAC/CAPT & PURS/CAPT | 21VU | 211 | 25-63-00 | |
| 3WP | P/BSW-EVAC/COMMAND | 21VU | 211 | 25-63-00 | |
| ** ON A/C NOT FOR ALL | |||||
| 5WP | HORN-WARNING | 48VU | 210 | 25-63-00 | |
| ** ON A/C NOT FOR ALL | |||||
| 7WP | SW-EVAC/HORN SHUT OFF | 21VU | 211 | 25-63-00 | |
3. System Description
A. Evacuation Signaling Components - Cockpit
(1) The evacuation signaling components and signal sources installed on the overhead panel in the cockpit include:
- a warning horn 5WP on panel 48VU,
- a COMMAND pushbutton switch 3WP on panel 21VU, with 'EVAC' and 'ON' indicator lights included in the switch unit,
- a CAPT & PURS and CAPT, two-position selector switch 2WP, installed on panel 21VU,
- a HORN SHUT OFF pushbutton switch 7WP on panel 21VU.
(2) The evacuation signaling components and signal sources installed on the overhead panel in the cockpit include:
- A warning horn 5WP on panel 48VU.
- A COMMAND pushbutton switch 3WP on panel 21VU, with 'EVAC' and 'ON' indicator lights included in the switch unit.
- A CAPT & PURS and CAPT, two-position selector switch 2WP, installed on panel 21VU.
- A HORN SHUT OFF pushbutton switch 7WP on panel 21VU.
B. Evacuation Signaling Components - FWD Utility Area
(1) The evacuation signaling components, interfaces and signal sources installed in the FWD utility area include:
- a COMD pushbutton switch with an internal indicator light,
- a RESET pushbutton switch,
- an EVAC indicator light is installed on the FWD ATTENDANT panel,
- an EVAC ALERT indicator light (optional) is installed on the standard AREA CALL panel.
(2) The components of the Cabin Intercommunication Data System (CIDS) (ref. 23-73-00) installed in the FWD utility area, that interface with the evacuation signaling system include:
- Decoder/Encoder Units (DEU), types A and B located in the overhead compartmend. The type A DEU has two amplifiers that function independently,
- a Programming and Test Panel (PTP) witch contains a cabin Assignment Modul (CAM), installed adjacent to the FWD ATTENDANT panel (behind an access cover), has the cabin configuration,
- cabin loudspeakers.
(3) The evacuation signaling components, interfaces and signal sources include:
(a) On the Flight Attendant Panel (FAP) 120RH:
- An EVAC CMD button and an EVAC RESET button. They each have an internal indicator light, and are on the hardkey panel.
(b) In the FWD utility area,
- On the Additional Attendant Panel (AAP), an EVAC button and an EVAC RESET button. They each have an internal indicator light.
- On the Attendant Indication Panel (AIP), an EVACUATION ALERT message is shown with an indicator light.
- On the Area Call Panel (ACP), an EVAC ALERT indicator light is installed.
(4) The components of the Cabin Intercommunication Data System (CIDS) (Ref. 23-73-00) installed in the FWD utility area, that have an interface with the EVAC system include:
- Decoder/Encoder Units (DEU), types A and B located in the overhead area. The DEU-A type has two amplifiers that function independently.
- A FAP which contains a Cabin Assignment Module (CAM), installed adjacent to the FWD door 1, has the cabin configuration.
- Cabin loudspeakers.
C. Evacuation Signaling Components - AFT Utility Area
(1) The evacuation signaling components, interfaces and signal sources installed in the AFT utility area include:
- a TONE OFF pushbutton switch and EVAC indicator light installed on the left AFT ATTENDANT panel,
- COMD and RESET pushbutton switches, EVAC and COMD indicator lights (optional) on the left and right AFT ATTENDANT panels,
- EVAC ALERT indicator lights (optional) on the standart AREA CALL panels.
(2) The components of the CIDS (Ref. AMM D/O 23-73-00-00) installed in the AFT utility area that interface with the evacuation signaling system include:
- Decoder/Encoder Units type DEU A and DEU B, located in the overhead compartmend,
- cabin loudspeakers.
(3) The evacuation signaling components, interfaces and signal sources installed in the AFT utility area include:
- On the AAP, an EVAC button and an EVAC RESET button. They each have an internal indicator light.
- On the AIP, an EVACUATION ALERT message is shown with an indicator light.
- On the ACP, an EVAC ALERT indicator light is installed.
(4) The components of the CIDS (Ref. AMM D/O 23-73-00-00) installed in the AFT utility area that have an interface with the EVAC system include:
- Decoder/Encoder Units type DEU A and DEU B, located in the overhead area.
- Cabin loudspeakers.
D. CIDS (Ref. 23-73-00) Components - Avionics Compartment
(1) The CIDS components that interface with the evacuation signaling system installed in the avionics compartment include:
- two CIDS directors. No. 1 (Active) is installed on panel 87VU and No. 2 (Hot-standby) is installed on panel 88VU in equipment rack 137MCU. Each director contains an Onboard Reprogrammable-Memory (OBRM).
(2) The CIDS components that have an interface with the EVAC system installed in the avionics compartment include:
- Two CIDS directors. No. 1 (Active) is installed on panel 87VU and No. 2 (Hot-standby) is installed on panel 88VU in equipment rack 137MCU. Each director contains an Onboard Reprogrammable-Memory (OBRM).
4. Interface
The evacuation and signaling equipment has interfaces with:
** ON A/C NOT FOR ALL The evacuation and signaling equipment has interfaces with:
- the Cabin Intercommunication Data System (CIDS) (Ref. AMM D/O 23-73-00-00).
5. Operation/Control and Indicating
A. Evacuation Signaling Equipment Control
(1) Discrete input signals, supplied to the No. 1 CIDS director (active) from the cockpit, control the evacuation signaling equipment. If the No. 1 CIDS director becomes unserviceable, the No. 2 CIDS director (hot-standby) keeps the system in operation. Facilities to supply other input signals to the CIDS director from the AFT utility area or the FAP are optional.
B. Cockpit Controls and Indications
(1) The COMMAND pushbutton switch 3WP supplies the electrical ground connection for the evacuation command signals of the system. Operation of the COMMAND pushbutton switch to the ON position causes:
- The ON indicator light (part of the switch) to come on.
- Transmission of a signal from the CIDS director to the warning horn 5WP.
- The EVAC indicator light (part of the COMMAND switch) to come on.
- A flashed indication for a general alert.
(2) The CAPT & PURS and CAPT (only) selector switch 2WP, selects who is able to activate an EVAC ALERT.
The selection sequence of the switch is:
Switch set to CAPT & PURS position
Switch set to CAPT position
The selection sequence of the switch is:
Switch set to CAPT & PURS position
| ------------------------------------------------------------------------------- |
| I I COCKPIT COMMAND SWITCH I |
| I I------------------------------------------------- |
| I I OFF I ON I |
| -----------------------------I------------------------I------------------------ |
| I PURSER I OFF I No alert I Alert I |
| I CONTROL I--------------I------------------------I------------------------ |
| I SWITCH I ON I Alert I Alert I |
| ------------------------------------------------------------------------------- |
Switch set to CAPT position
| ------------------------------------------------------------------------------- |
| I I COCKPIT COMMAND SWITCH I |
| I I------------------------------------------------- |
| I I OFF I ON I |
| -----------------------------I------------------------I------------------------ |
| I PURSER I OFF I No alert I Alert I |
| I CONTROL I--------------I------------------------I------------------------ |
| I SWITCH I ON I Alert I Alert I |
| I I I cockpit only I I |
| ------------------------------------------------------------------------------- |
(3) Operation of the HORN SHUT OFF pushbutton switch 7WP cancels the evacuation tone transmission to the warning horn 5WP in the cockpit.
C. Controls and Indications in the Cabin
(1) FAP:
(a) Operation of the EVAC CMD pushbutton switch causes:
- The CMD indicator light (part of the switch) to come on.
- The transmission of evacuation tone from the CIDS director to specified loudspeakers in the cabin.
- The EVAC indicator light on the FAP to come on.
- A flashed indication for a general alert.
(b) If the COMMAND switch 3WP (on the overhead panel in the cockpit) is selected ON, a visual EVAC ALERT indication comes on steady or flashes (optional).
(c) Operation of the RESET pushbutton switch cancels the evacuation tone transmission to the respective loudspeakers in the cabin.
(2) Left AFT ATTENDANT Panel:
(a) A visual EVAC indication comes on steady or flashed.
(b) Operation of the RESET pushbutton switch cancels the evacuation tone transmission to the respective loudspeakers.
(c) Facilities for other EVAC CMD and EVAC indications (optional) are installed at the AFT ATTENDANT stations and AREA CALL panels (in the AFT utility area).