ARINC REPORT – Page 6 OMS DESCRIPTION OMS Architecture The OMS should consist of the following equipment:?. Buy ARINC DESIGN GUIDANCE FOR ONBOARD MAINTENANCE SYSTEM from SAI Global. Avionics maintenance practices continue to improve through On-Board Maintenance System (OMS) recording. This standard defines the OMS.
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To reduce or eliminate most ground support equipment, 642 as rigging adjust boxes and data bus readers. These screens should allow a user to display data in text or graphic format, present menus, display reports, and perform selected ACMS functions e. Any reporting LRU should not be required to respond to multiple users at the same time.
Flight phase and UTC when fault occurred Fault isolation to an SRU level, if practical shop data Additional parameters which may be useful for troubleshooting e. The time interval from reducing power to idle at a specified altitude e. Ground tests should be enabled by selections via the OMS user interface.
This should be considered the default flight phase.
This capability should be provided in a manner which does not interfere with normal operation of any other functions of the system. By having each aginc report the recovery from a power interrupt, the CMC can better correlate the interface failures received from the member systems. This description is not intended to delineate the design for an OMS, but to provide an example for understanding the requirements for such a system.
Normally, this is met by aric operational monitoring within the system. In addition, the CMC should have enough NVM to store hardware and software configuration identification of failed LRUs and airline-unique data, such as airlineunique equipment part numbers and notes. This should be used for reporting multiple faults when no additional information is to be attached, as it minimizes bus loading.
ARINC – Wikipedia
Non-member systems are those systems with no electronic interface for fault reporting via the CMC. The CMC will also initiate automatic tests within the member system by means of test request message s to the member aeinc. The time interval from the initiation of engine shutdown e. From Wikipedia, the free encyclopedia. The OMS designer should ensure that the proper manual troubleshooting procedures are automatically made available from applicable OMD data.
Following the installation, adjustment, or replacement of an LRU, self-tests to verify proper power, 264 interconnection and, in some cases, system operation, are helpful in confirming a successful maintenance action. The first word following the label word should be the system status word.
Onboard Maintenance Systems for Modern Aviation
The CMC should provide an Event command as either a broadcast or an equipment specific signal on the digital bus. Stored Event data should be available from each member system when requested by the CMC.
The detailed provisions needed of the OMD are described in section 7. If a response is not received within specific time period, the CMC should transmit the request again. Flight leg number will be displayed on the maintenance terminal as the following: However, it should only be used where necessary to determine system compatibility. Systems or LRUs which do not interface directly with the CMC, but which report faults and failures via ariinc LRU or system, are considered, for the purpose of this report, to be a part of the member system which has the direct CMC interface.
Sufficient protection should be provided to preclude inadvertent alteration of this software.
Member systems should transmit fault history data by flight leg. For example, OMS application program may not have to try more than once in the case OSI transport layer makes such as 3 attempts before reporting a communication fault to OMS application program.
Nonetheless, designers arincc avoid adding complexity for shop maintenance without good economic justifications. The CMC should interpret the codes and translate them into a predetermined set of clear, English-language messages to be displayed for arincc personnel. Type class and number identifies the type class and number per section 6.
These general Specifications and Reports may be considered as supplementary to the Equipment Characteristics in which they are referenced. Therefore, in addition to the actual maintenance function, the OMS should provide service reports on systems where sensors are available for normal operation, or where the addition of suitable arinnc is economically feasible for this purpose.