Cabin intercom.pdf

Cabin Intercommunication Data System Architecture for Aeroplanes Commercial Aircraft Cabin Systems - CIDS To help explain cabin systems, the following is an example of systems currently being used in commercial aircraft. The Cabin Intercommunication Data System (CIDS) is an Airbus system for cabin m...

Cabin Intercommunication Data System Architecture for Aeroplanes Commercial Aircraft Cabin Systems - CIDS To help explain cabin systems, the following is an example of systems currently being used in commercial aircraft. The Cabin Intercommunication Data System (CIDS) is an Airbus system for cabin management fitted to its fleet of passenger aircraft. The CIDS is a microprocessor-based system which controls and displays cabin functions for passengers and crew The Cabin Intercommunication Data System (CIDS) employs following components to accomplish its functions for passengers and crew: CIDS Director (DIR) Data links Decoder/Encoder Unit A (DEU A) Decoder/Encoder Unit B (DEU B) Forward Attendant Panel (FAP) Additional Attendant Panel (AAP) Area Call Panel (ACP) Attendant Indication Panels (AIP). Example of CIDS architecture 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 65 of 136 CIDS Director CIDS Directors (DIR) are the central control and interface component of CIDS. For redundancy, the system has two identical directors (DIRs). One director is active while the other is in hot-standby mode. Each receives the same inputs and processes the information. Results are checked via a crosstalk bus, and if correct, the active director’s output circuits are enabled. CIDS director Each DIR has its own Onboard Replacement Module (OBRM). The OBRM used to store the software for the current cabin layout and the properties of related equipment. DIRs interface to other system components through data links, discrete signals and audio lines. Data links The main data links used by the directors are the CIDS bus and ARINC 429 bus. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 66 of 136 CIDS Bus The CID bus is a proprietary serial half-duplex (TX/RX Both directions but one at a time) data bus which uses two twisted, shielded cables. Each data bus cable is terminated with resistors for cable impedance-matching known as Bus Termination Resistors (BTR). They are only available in the last DEU connection box in each chain. The components connected with CIDS data links are DEU type A DEU type B Between DIR 1 and DIR 2 (crosstalk bus). 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 67 of 136 ARINC 429 Bus The ARINC 429 is a simplex bus that uses a twisted, shielded pair which principally interfaces to onboard aircraft systems. The following components/systems are connected with ARINC 429 links: Flight Attendant Panel (FAP) Vacuum System Controller (VSC) Environmental Conditioning System (ECS) Smoke Detection Control Unit (SDCU) Centralised Maintenance Computer (CMC) In-Flight Entertainment system (IFE) System Data Acquisition Concentrator (SDAC). © Aviation Australia ARINC 429 data links 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 68 of 136 Discrete Input/Outputs and Audio Signals Discretes are single-wire inputs/outputs, such as switch inputs or relay drive outputs. Audio signals are analogue and are sent via a discrete connection. The DIRs use discrete and audio signals to link with the following: Slat Flap Control Computer (SFCC) Landing Gear Control and Interface Unit (LGCIU) Engine Interface and Vibration Monitoring Unit (EIVMU) Cabin Pressure Controller (CPC) Call panel Cockpit door Cabin pressure/exit signs relay Flight Warning Computer (FWC) Audio Management Unit (AMU) Cockpit handset Service interphone boomsets In-Flight Entertainment system (IFE). Discrete and audio signals 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 69 of 136 Decoder/Encoder Unit There are two types of decoder/encoder units: type-A (DEU-A), which is used on passenger-related systems, and type-B (DEU-B), which is dedicated to cabin-related systems and crew functions. DEU A and DEU B 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 70 of 136 Decoder/Encoder Unit Type-A The Decoder/Encoder Unit Type-A (DEU-A) data buses interface with the active DIR to control passenger-related systems, such as Passenger Service Units (PSU) PAX lighted signs (FSB/NS/RTS) PAX-call lights Loudspeakers Cabin lighting. The number of DEU-As is controlled by the number of inputs/outputs required, which is dependent on the cabin layout, installation of optional systems and aircraft type. For example, A320 has 16 DEUs-type A, whereas in the A380’s baseline configuration, there are 85 DEUs of type A installed in the whole cabin (a maximum of 192 can be installed). DEU-A interfaces The DEU-As are connected to the DIRs through a CIDS data-bus. For redundancy purposes, there are two top line data buses on each side of the left, centre and right seat isles. The DEU-As are connected alternately to one of these data buses. All DEU-As are interchangeable. The installation address is given through coding switches which are installed in each DEU-A connection box. Note the end connection box of each chain contains a Bus Termination Resistor (BTR). 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 71 of 136 Decoder/Encoder Unit Type-B The active DIR and the cabin-crew-related functions are interfaced via type B Decoder/Encoder Units (DEU-B). The CIDS uses each DEU-B to control the following: Area Call Panels (ACP) Attendant Indication Panels (AIP) Additional Attendant Panels (AAP) Handsets Emergency Power Supply Unit (EPSU) Slide/door pressure sensors Drain mast heating monitoring. DEU-B interfaces Not all inputs/outputs are used on each DEU-B. This depends on the cabin layout and the installation of the optional systems. All DEU-Bs are interchangeable. The installation address is given through coding switches which are installed on each DEU-B connection box. Note the end connection box of each chain contains a Bus Termination Resistor (BTR). 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 72 of 136 Connection Boxes The CIDS data bus is connected through the connection boxes to all the DEUs. All connection boxes must be connected. If one connection box is not connected, the data bus is interrupted, and a related message is shown on the FAP/PIM and on the CMC/MCDU. Connection box/coding switches Coding Switches The installation address on either DEU-A or DEU-B is given through coding switches which are installed on each connection box. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 73 of 136 Forward Attendant Panel The Forward Attendant Panel (FAP) is used by the cabin and maintenance crew to control and monitor the various cabin support systems. The Forward Attendant Panel (FAP) is connected to the DIRs through ARINC 429 data buses. Through these buses, the FAP transmits and receives data which includes BITE information for controlling and monitoring cabin systems. The FAP has links with following CIDS components to control and monitor their performance: A discrete signal is transmitted to the Emergency Power Supply Units (EPSU) for activation of the emergency lighting. Discrete signals connect the type B DEUs for evacuation activation, reset and indication. The water quantity transmitter provides potable water quantity indication. The vacuum system controller provides the waste quantity indication. Discrete signals for lavatory lighting, passenger reading lights and cabin attendant work lights and for activation of the lavatory water heater Activation signal for heating of drain mast. FAP interfaces 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 74 of 136 Included as part of the FAP is the Programming and Test Panel (PTP). The Programming and Test Panel (PTP) is used for system indications, programming and testing of the CIDS. It consists of a display, keypad and Cabin Assignment Module (CAM). The CAM is a memory module which stores the cabin-related programmable information. Forward Attendant Panel (FAP) and Programming and Test Panel (PTP) Additional Attendant Panel An additional attendant panel (AAP) 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 75 of 136 The Additional Attendant Panel (AAP) is used to do the following: To activate EVAC, indication and to reset the system Reset pax call Indication of lavatory smoke and reset function To control the cabin illumination To activate lavatory water heaters. The AAPs have an RS 232 (serial half duplex) data bus to send and receive data through the related DEU-B. It has a BITE system to detect internal and external failures. The BITE result is transmitted to the DEU-B, then to the director. Connections between the DEU-B and AAP 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 76 of 136 Attendant Indication Panel The Attendant Indication Panels (AIP) are installed at each cabin attendant station which has a handset. Attendant indication panel (AIP) Through the related DEU-B, the AIP is supplied with 28V DC and controlled via an RS 232 data bus. Each AIP has a BITE to detect internal failures. The result is transmitted to the related DEU-B. The display area is for indication of alphanumerical messages and is divided into two rows. Each of these rows has 16 characters. The upper line of the display is used for indications related to the cockpit and cabin handset operation. The lower line gives passenger call, smoke detection or special system information (e.g., PA in use). Each individual text is laid down in the CAM and therefore can be programmed accordingly. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 77 of 136 Area Call Panel The Area Call Panels (ACPs) are typically installed on the right- and left-hand sides of the ceiling at each end of the cabin zone. The fields are used to get the attention of the cabin attendants, and they can be programmed to either flash or illuminate steadily. The lights can be seen from the front or rear of the ACP. Area call panel (ACP) The ACP has four separately controlled fields; each field contains coloured Light Emitting Diodes (LEDs). A call via the cabin or cockpit interphone will come on pink on the indicator, a blue light indicates pax seat call and an amber light indicates a lavatory call. Area call panel (ACP) fields 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 78 of 136 Each ACP links with discrete connections to a nearby DEU-B. The DEU-B switches the LEDs. Any field or combination of fields can be illuminated. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 79 of 136 Communication Functions CIDS Communication Links The following communication links are achieved through the CIDS. Passenger address and integrated pre-recoded announcement/boarding music Cabin interphone Service interphone Crew signalling and alerting. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 80 of 136 Passenger Address and Integrated Pre-Recoded Announcement/Boarding Music The Passenger Address (PA) system supplies one-way voice communication to make announcements from the cockpit or from a cabin crew station to the passengers. These announcements are initiated from the cockpit using either a handset or acoustic devices. The CIDS can be interfaced with pre-recorded voice announcements and the boarding music system. The cockpit handset is connected with the active DIR. By pressing the “Press to Talk” (PTT) switch and talking into the handset, the announcement is broadcasted over all PA loudspeakers via the DEUA or the passenger’s headsets via the In-Flight Entertainment (IFE) system. Loud speakers level adjustment for announcements and chimes is protected by an access code and is available on the ground or in flight Pre-recorded announcement and music (PRAM) The other acoustic devices are connected to the DIR via an Audio Management Unit (AMU). The PA transmission key located on the Audio Control Panel (ACP) must be pressed and held. It comes on green and connects the microphone audio to the PA system. A “PA ALL IN USE” indication appears on all AIPs. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 81 of 136 Note the links from the handset and Audio Management Unit (AMU) are analogue, then converted to digital within the directors and transmitted via the CIDs data bus. The DEUs then reconvert the digital signals to analogue, amplify them and then output the audio to the headsets/speakers. The cabin attendants can make announcements via cabin crew stations handsets. The cabin attendant’s announcements are transmitted via DEU-Bs to the DIR by digital data and then broadcasted over all PA loudspeakers via DEU-As or passenger’s headsets via the In-Flight entertainment system (IFE). It is possible to override an established PA announcement either from another cabin station with a higher priority or from the cockpit. Cabin Interphone System The cabin interphone system is used for communication between all cabin crew stations or between the cockpit and the cabin crew stations. Communication from the cockpit uses the cockpit handset or an acoustic device, and cabin communication uses any cabin crew station handset. As the communication links are established independently, a certain number of communication links can exist in parallel. Also, conference modes are possible. Cabin interphone system Calls from the cockpit are initiated from the CALLS panel, which is connected to the directors. The call push-buttons on the CALLS panel allow the crew to select the required attendant station. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 82 of 136 The DIRs and DEUs incorporate analogue to digital and digital to analogue converters with the audio carried as data through the CIDs data bus. The emergency call or cockpit call overrides all communications between cabin stations. Service Interphone System The service interphone system is used for communications between the service interphone stations or cockpit/cabin crew stations. The service interphone jacks are located within the major service areas for use during maintenance activities. This system is available automatically if landing gear is down and locked or manually by pressing the “override” push-button. Note the director incorporates the Analogue to Digital (A/D) and Digital to Analog (D/A) converters for the audio signals from the Audio Management Unit (AMU) and service interphone jacks. Service interphone 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 83 of 136 Operation from the Cockpit The acoustical equipment in the cockpit transmits the audio signals to the Audio Management Unit (AMU) through the audio lines. The AMU transmits the signals to the DIR. The DIR transmits the signals to the attendant stations through DEU-Bs and to the service interphone jacks through audio lines. Operation from the Attendant Station The operation starts by pushing the key on the attendant handset. The audio signals are fed into the CIDS DIRs through the DEU-B. The CIDS DIR transmits the audio signals to the cockpit acoustical equipment through the AMU and the service interphone jacks through the audio lines. Operation from a Service Interphone Jack The boomset transmits the audio signals to the CIDS DIR through the audio lines. The CIDS DIR transmits the audio signals to cockpit acoustical equipment through the AMU, the attendant stations through DEU B and the service interphone jacks through the audio lines. There are different kinds of cockpit and cabin crew signalling and alerting functions depending on the situation. This function is to inform the cockpit crew about the cabin status, such as the “area ready” function during take-off/landing phase. It is activated through the Flight Attendant’s Panels (FAP) the signal which is then displayed on the ECAM. Crew Signalling and Alerting The emergency crew alerting system is used to indicate unusual behaviour in cabin or cockpit. This function is initiated by the alert push-button from the cabin or the cockpit. It activates visual and aural warnings in the cockpit as well as the cabin. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 84 of 136 CIDS Indicating and Control Functions CIDS Indicating and Control Functions The CIDS provides performance and operational requirements of the interfaced system on the FAP display. Also, these systems can be controlled via keys on the FAP. Indicating Functions The following basic systems are connected with the CIDS to monitor and provide indications of their performances on the FAP. Emergency Lighting Power Supply The CIDS interface with the emergency lighting system serves to monitor the system and to carry out battery-capacity tests. Ice Protection and Control The CIDS monitors and controls the protection against the freezing of the potable/wastewater system. The system has a flexible heater foil which is bonded to the drain mast tubes, and the temperature is controlled through a sensor. Doors/Slides The door and escape-slide control system monitors the door and escape slide bottle-pressure reservoir at the emergency exits. On the ground and in flight, the status is permanently monitored and reported to the FAP and to the Central Maintenance System (CMS). 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 85 of 136 Vacuum System/Water and Waste System The CIDS interface the water/waste system via a vacuum system to display the potable and wastewater tanks’ levels on the FAP. CIDS Indication on water and waste systems 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 86 of 136 Passenger Service Control Functions Passenger Service System The passenger service system is used for operation of the passenger reading lights and passenger call activation/deactivation. The controlling switches are available for passengers to control these functions. Also, the CIDS interfaces with the In-Flight Entrainment (IFE) system to control music, video and games which are accessible at each passenger seat. Passenger Lighted-Signs The passenger lighted-signs system controls the No Smoking (NS), Fasten Seat Belt (FSB), Return to Seat (RTS) and EXIT Signs in the cabin and lavatories. The no-smoking on/auto/off switch in the cockpit controls the NS Signs. They come on manually in the on position and automatically in the auto position if the landing gear is down and locked or slats are extended and oil pressure is high. When the active DIR receives these signals from the respective sensors or computers, the relevant data is passed to all DEU-As to activate the applicable passenger signs. If a rapid decompression occurs, the Cabin Pressure Controller (CPC) provides a discrete signal to DIR and activates the NS, FSB and EXIT signs to come on automatically. A passenger attention lo chime is heard through the passenger loudspeakers. CIDS passenger light signs 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 87 of 136 Cabin Illumination The CIDS controls the illumination of the different cabin areas independently. The system has three illumination levels (bright, dim 1 and dim 2) and can be controlled by push-button switches on the FAP. Cabin light control 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 88 of 136 Emergency-Evacuation When the Emergency-Evacuation (EVAC) signalling system is activated either from the cockpit or from the FAP, the system provides aural and visual signals to all crew members giving all necessary preparations for an evacuation from the aircraft. The cockpit EVAC panel is directly connected to the active DIR, so relevant data is passed to the DEU-As and DEU-Bs to alert the cabin attendants. If the system is activated through the FAP or AAP, the data flows through the relevant DEU-B and then to the active DIR for system activation. EVAC operation Layout Selection The CIDS is designed in such a way that it is not necessary to make complex and time expensive hardware changes. If the cabin layout has to be reconfigured, only a change to the software database is required. The CIDS cabin layout selection function gives the choice of predefined and modifiable cabin layouts which are loaded in the CAM. This function is protected by an access code and is only available on the ground. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 89 of 136 Cabin Programming The configuration of cabin zones can be changed via a dedicated programming page on the FAP. Through this page following cabin programming modes are available on ground or in flight. They can be protected by an access code. No Smoking Zones Programming Non-Smoker Aircraft Programming Software Loading The system can be reconfigured through Field Loadable Software (FLS). FLS can be loaded in the OBRM of DIRs or via the Cabin Assignment Module (CAM) on the FAP using flash memory cards via a menu page. This function is only available on the ground. CIDS Warnings The CIDS Directors (DIRs), Decoder/Encoder Units (DEUs), Forward Attendant Panel (FAP), Additional Attendant Panels (AAPs) and Attendant Indication Panels (AIPs) contain comprehensive Built-In Test Equipment (BITE) circuitry. This allows the CIDS to detect faults in the connected systems. CIDS warnings are enunciated in the cockpit as well as on the FAP (PTP) if the DIR detects a failure in the system during the flight. However, the warnings are inhibited during the flight phases 3, 4, 5, 7 and 8. CIDS warning 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 90 of 136 All BITE results are stored in the DIR’s BITE-dedicated memory with failure indications shown on the Programming and Test Panel (PTP) and illumination of CIDS caution lights on the FAP. At the same time, the BITE information is fed to the central maintenance system. CIDS Warnings on the Electronic Centralised Aircraft Monitoring When a CIDS caution message is displayed on the Electronic Centralised Aircraft Monitoring (ECAM), the detailed failure message is memorised in the PTP and available on the ground on request. The DIR continues to send CIDS caution messages to the system until the fault is corrected. The CIDS caution message on the ECAM is displayed even if one DIR fails. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 91 of 136 Cabin Network Service Passenger Cabin Network Services The Cabin Network Services (CNS) is a part of the Aircraft Information Network System (AINS) which provides passengers with: Data communication service Wireless ethernet/Email services Telephone and fax facilities Visual information service such as Airshow Passenger information network Aircraft Information Network System The functions of Aircraft Information Network System (AINS) are: Server providing a host-platform for maintenance and operations applications Secured interface to the avionics Virtual link between the Ethernet Local Area Network (ELAN) of the aircraft and the groundbased information system of the airlines. The internal architecture of this system consists of: Server Interface Unit (SIU) Aircraft Network Server Unit (ANSU). Server Interface Unit The Server Interface Unit (SIU) provides an interface between the airline network and the aircraft avionics, to host ‘sensible’ applications and to accommodate an ethernet switch. The SIU supports the following functions: Avionics Local Access Network (LAN): an Ethernet switch allows connecting to ethernet LRUs Input and output labels from avionics LRUs. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 92 of 136 Aircraft Network Server Unit The Aircraft Network Server Unit (ANSU) provides a common data file storage system for loadable software and other applications. A host platform for airline applications processing and network communication services. The ANSU is interfaced with Terminal Wireless LAN Unit (TWLU) for ground network connection with the Cabin Network System (CNS) and with cockpit connections for PC or printer installation. Data Communication Service The communication between the end user and the aircraft network server system is handled by data links. This service provides wireless ethernet/email service, telephone and fax facilities in the aircraft cabin area. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 93 of 136 Wireless Ethernet/Email Services The CNS supplies the aircraft cabin with a high-speed communication connection based on standard ethernet which refers to IEEE 802.3 and standard network protocols. The flight and cabin crew, the passengers and the maintenance personnel can use the CNS system to connect devices like laptops to the LAN. They can use Email services or airline specific applications. The components of CNS are: Ethernet Switch Unit (ESU) Cabin Network Server Unit (CNSU) Cabin Wireless LAN Unit (CWLU) Antenna CWLU Cabin Connector. CNS architecture Ethernet Switch Unit The Ethernet Switch Unit (ESU) is the part of the CNS that controls the interfaces between the Cabin Network System units and devices that are connected to the cabin Ethernet. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 94 of 136 Cabin Network Server Unit The Cabin Network Server Unit (CNSU) does the system processing and the storage of data and files. The customised application software is installed to the CNSU. The CNSU has connections with the Centralised Maintenance Computer (CMC). CMC monitors the system integrity and provides defect reports on MCDU display. Cabin Wireless LAN Unit The Cabin Wireless LAN Unit (CWLU) with its one or two antennas, supplies the aircraft cabin with a wireless network. The Personnel Electronic Devices (PEDs) should have IEEE 802.3 capability to connect with cabin wireless system. PEDs which are connected to the CWLU LAN can be used all over the cabin. These units are mounted on various locations in the cabin area. Cabin wireless LAN unit (CWLU) Antenna CWLU The antenna CWLU is an omni-directional passive antenna and it operates with RF signals at a frequency between 2.4 and 2.5 GHz. The antenna receives the signals from the devices, that are wirelessly connected to the LAN and transmits the signals to the CWLUs and the reverse way. Cabin Connector The Cabin Connector is a wired network connection for the cabin crew. It it has a data rate of up to 100 Mbps. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 95 of 136 Interface Systems of the Cabin Network System The CNS interfaces with following systems: Forward Attendant Panel (FAP) In-Flight Entertainment System (IFE) Aircraft Information Network System (AINS) Landing Gear Control and Interface Unit (LGCIU) Cabin Telephone Unit (CTU) Centralised Maintenance Computer (CMC). CNS interfaced systems 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 96 of 136 Passenger Air-to-Ground Telephone/Fax System The Passenger Air-to-Ground Telephone System (PATS) enables the passengers (and the cabin crew) to facsimile by global public-service telephone network during flight. For transmission to the ground, the PATS use the aircraft Satellite Communication (SATCOM) system. Its performance is equal to the usual office fax machines. The interconnection with the Satellite Data Unit (SDU) allows a worldwide FAX service. Fax Machine The fax machine is a user equipment to establish voice and data connections to the public telephone network. The fax machine provides the normal telephone functions with additional features like credit card reader and LCD display. Telephone System The telephone system is connected to the Satellite Communication System (SATCOM) via the Passenger Entertainment System Controller (PESC) and the Cabin Telecommunication Unit (CTU). Satellite telephone/fax system 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 97 of 136 The System Control/Interface Module has the master control of communication between the fax, the optional credit card reader module and the bearer system. This module shall also transmit, receive and process data and signal information between the bearer system and the fax terminal. Satellite coverage for telephone network Passenger Visual Information System The Passenger Visual Information System (PVIS) supplies the passengers with in-flight visual information. The PVIS supplies real-time flight and destination data to the passengers through the Passenger Entertainment System (PES) Video display units. This data is given to the passengers as aircraft position data on maps and aircraft status data as text. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 98 of 136 The modes of Airshow operation are set from the Cabin Management Terminal (CMT). The PVIS gives following information to passengers: Flight status (e.g. altitude, outside temperature, ground speed, longitude and latitude A/C position) Maps with the aircraft flight course Airport gate maps and other related details Real-time video and audio details of the countries along the flight path The main computer of the PVIS is the PVIS Processor Unit (Digital Interface Unit or DIU). The information is provided to the passengers via display units mounted either on cabin overhead panels or seat mounted. The Processor Unit has data bus interfaces with: Flight Management Guidance and Envelope Computer (FMGEC) Passenger Entertainment System Video (PES Video) Central Maintenance Computer (CMC) Cabin and Passenger Management System (CPMS) Multipurpose Disk Drive Unit (MDDU) The Processor Unit uses signals from above interfaced units to calculate: The global position of the aircraft The altitude of the aircraft The distance to the destination The outside air temperature An estimate of the time until arrival at the destination The total flight time The local time at the destination 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 99 of 136 PVIS interface Airshow windows 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 100 of 136 Passenger Information Network The Cabin Passenger Information network is installed to provide the cabin crew with additional cabin control and monitoring functions. This improves the productivity of the crew and enhances the passenger service. Also, it reduces the cabin organisation workload. The main features of the system are: Management of all cabin related data Support of passenger service and passenger information. The system is managed by Cabin Passenger Management System (CPMS) which is based on a modular concept, in order to provide the possibility for easy extension of the system. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 101 of 136 Management of Cabin Related Data The management of cabin related data comprises the establishment of reports, checklists and instructions for cabin crew such as: Cabin configuration reports (e.g. class-divisions, video-areas, seat-lockouts) Cabin status reports (e.g. list of faults/damage, service/maintenance data) Pre-flight, in-flight and post-flight cabin checklists Administration of revenue reports (e.g. headset revenues, onboard sales, duty-free/ticket sales) Provisioning reports (catering) Passenger lists/information (e.g. special meals, handicapped persons, unaccompanied children) Library of audio/video programs Information about the destination Requisition of ground support Attendant flight reports Information for the cabin crew from the ground base (via ACARS) and vice versa. Support of Passenger Service and Passenger Information It comprises the subsequent features: Information of connecting flights Arrival information (e.g. time, destination, gate) Indication of flight information via the integrated Passenger Visual Information System (PVIS) (e.g. flight route, air data). A communication service (via ACARS) for reservations (airline, car hotel etc.) is also available. 2022-12-13 B1-11k Turbine Aeroplane Aerodynamics, Structures and Systems CASA Part Part 66 - Training Materials Only Page 102 of 136