Buy ARINC Ats Data Link Applications Over Acars Air-Ground Network from SAI Global. ARINC documents may be obtained from ARINC at: ,. ARINC “ATS Data Link Applications Over ACARS Air-Ground Network”. ARINC. Aeronautical Radio, Incorporated (ARINC), established in , is a major provider of transport communications and systems engineering solutions for eight .
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Type of Comment Check all that apply: Delivery attempt via an alternate DSP This document will support the development of an end-to-end ATS system by: A generic definition of interoperability requirements in the scope 6222 this document is as follows: A new system element shall be classified as interoperable with the existing system if it can be operationally approved without change to any pre-existing hardware or software.
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Differences which can be accommodated by operational procedure changes may be acceptable and still be considered interoperable. There may be limits in the number of such procedural changes due to operational or safety considerations. Other CAA ground systems are currently under operational approval process.
This document will not cover the requirements associated with the Airline Operational Communications Datalink AOC DLwhich isalso used in the operational environment.
Ground-to-ground ATS communications are also beyond the scope of this document even though they may be part of the operational environment. These are defined in reional standards and are subject to bilateral agreements between ATS providers. This document will make reference to existing standards wherever possible. Wherever possible interoperability standards are defined by direct reference to a released industry standard document.
The unreleased DO Change 1 has been used as a source in the generation of this document. Specific end system standards which impact interoperability include: Section 3 provides the document organization. The datalink boundaries are dependant on the system architecture. They may be internal to a physical unit. Differences in Boeing FANS-1 and Airbus FANS-A implementations, several of which are beyond the scope of existing standards, are identified so that they can be accommodated by the ground system automation.
Where possible a recommended implementation is identified. Section 6 defines the dynamic aspects of the applications and the sequences of operations required for correct operation. Section 7 defines the verification aspects for the end to end system.
It includes a table of all interoperability requirements statements with paragraph references and the applicability to air, ground or datalink. Where there are differences in the various implementations, these are noted.
Section 8 contains Appendix Arnic where candidate improvements to the baseline system are identified. These are grouped into two categories: A Central Processor CPthrough which all communication passes. Nevertheless, if a DSP adopts a distributed architecture with multiple CPs in the future, the provisions described in arijc document will still apply. As satellite datalink service is usually global, an airline generally needs to contract with only one DSP for satellite datalink service.
Whether handled by a single DSP or a number atinc DSPs operating in an internetworked arrangement, all datalink traffic shall be subject to the same performance requirements. An addressing mechanism to support routing and handling within the avionics The aircraft registration number, also known as the aircraft ID or tail number, is aricn only unique address used by the DSPs to deliver uplinks to the aircraft.
ACARS uplink messages use a combination of label, sub-label, and MFI if requiredto identify the avionics device to which the message is being sent. Provisions dealing with the qrinc of SMI are given in Section 4. Aircraft avionics shall use the UBIs to differentiate between uplinks and copies of these uplinks.
Uplinks with duplicate UBIs shall be rejected by the avionics. Uplink and downlink message delivery will be covered in separate sections below.
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Typically, an aircraft will use VHF if it is available, otherwise it will use satellite. Messages of greater than characters in length will be broken down into blocks of characters or part thereof, by the avionics. Part of the DSP processing includes the re-assembly of multiblock messages. Message delivery will only be possible if the aircraft operator has a contractual arrangement in place with that DSP. The aircraft will deliver the message in accordance with the operational scenarios given below.
Use of actual 7 character supplemental address in the downlink message. For cost-effective communication VHF is used, wherever possible.
When received by a DSP, uplink messages of greater than characters in length will be broken down into blocks of characters or part thereof. Part of the on-board processing carried out by the ACARS Management function includes the re-assembly of multiblock messages. SITA does not currently meet this requirement 4. Any number of DSPs may be supported. If VHF is available and the attempt at delivery via VHF was not successful, uplink delivery shall be attempted via the satellite communications facilities of an alternate DSP.
Delivery attempt via an alternate DSP This scenario will apply under the following condition. This scenario will apply under the following condition: This is obtained through the use of the media advisory message. Within the message are flags indicating the establishment or loss of communication via each medium. When communication is established via a particular medium, the signature line of the media advisory message provides the identity of the DSP.
Media Advisory downlinks shall be delivered to the internetworking functions of all DSPs, which use the media advisory message. When media advisory messages are used, the first attempt to deliver a message is made using information derived from recently received media advisory messages.
This will indicate whether VHF is in use and if so, through which datalink service provider. It will also indicate if the aircraft has logged-on to the satellite facilities of a datalink service provider with whom it has no contract. In the absence of media advisory messages or if the first attempt to deliver a message has failed then the internetworking function shall forward the message to the next DSP as determined by contractual arrangements of the particular aircraft operator.
There is an acknowledgement for downlinks. It is recommended that ATS Providers: Following terminology is used: The optional MFI will not be used. The preferred solution is B. For convenience, the basic DO paragraph organization has been used. The ADSF is conceptually capable of three types of message contracts: Not all capabilities of an ADSF are required. When capabilities above the minimum are implemented, they shall operate as specified herein.
Disconnect requests mentioned hereafter are provided by this interface. This type of communication is also known as an association. Upon establishment of a connection, the ADSF shall process uplinks on this connection. There is no specific message to establish an ADS connection. The ADSF shall be capable of processing multiple requests in a single uplink. The maximum size of the uplink described above is 55 octets. The first octet of an ADS request shall define the type of request being made.
Valid requests shall be: Cancel All Contracts and Terminate Connection tag value 1, see subparagraph 5. It will also be an error if a Cancel Contract Request is received when that contract is not active or a contract request is received with a contract request number the same as a contract already in effect on a particular connection. The operational modes are normal and emergency.
Any emergency Periodic Contract Request received during normal mode operation is considered an error. Any normal Periodic Contract Request received during emergency operational mode is considered an error. Signed numerical values shall be interpreted as two’s complement notation.
The value of the MSB is accurate by definition. The value of the LSB is an approximation. Zero is not a valid value for the vertical rate change threshold.
The ceiling altitude must be greater than the floor altitude. The Non-compliance Notification is used instead. Instead, this event would never occur. Since multiple requests may be sent in a single xrinc, a valid request following a request containing an undefined on-request group tag or event tag will be ignored. The ground should be aware that a Non-compliance Notification of the first request in a multiple-request uplink due to an undefined tag requires that the second request be sent again.
The reason that the ADSF must ignore the remainder of the uplink is the uncertainty of the format of the undefined on-request group tag or event tag.
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Since the data associated with the tag is an unknown number of octets, the ADSF could not, in a deterministic manner, continue processing the remainder of the uplink. In this section, following definitions apply: The optional groups of data shall be: All optional data are shown in the following bit map. The remaining data are optional. The format is identical for the emergency Periodic Contract Request except for the value of the ADS-request tag, arihc would be 9.
The format of the reporting rate octet shall be defined as follows. The following algorithm shall be used to determine the reporting interval: Each on-request group may have a unique arnic, e.