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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It is recognized that from a certification standpoint these monitors are part of the basic operational function with the appropriate criticality, but for the purposes of fault detection integrity they will be considered to be part of BITE.

Value 0 1 2 Meaning Inactive Active Latched s.

Sets may include a fixed, ordered, list of distinct items, some of which may be optional. Faults which do not impact operational functionality are reported through the ACMS. It is also expected that the interaction between BITE and the operator will be simplified and unified, and that a uniform BITE methodology will be established throughout the industry which will reduce the training needed by maintenance personnel.

The remainder of this section is a definition of the specific requirements applicable to OMS communications. Such updates should allow individual airlines to include data unique to their operations. A standardized, English-language-based user interface for performing all BITE tests and line maintenance functions on the airplane.

The time interval from reducing power to idle at a specified altitude e. Receiving systems should consider the boolean as true if any of the bits are set to one. The time interval from touchdown until Taxi In begins e.


Systems operating time should be divided into the following basic flight phases: Systems or LRUs which do not interface directly with the CMC, but which report faults and failures via another 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. This data should form the foundation of OMD. Requirements for reporting flight leg numbers as part of LRU fault history are given in section 6.

Onboard Maintenance Systems for Modern Aviation

arijc The most significant octet should contain the first character when reading the string from left to right of the string. An easy method to input alpha-numeric data should be provided. LRU or system tests following LRU replacement should be sufficient to declare the airplane system serviceable.

Allison Transmission Diversified Machine, Inc. If the test is no longer inhibited, the inhibit code should be set to zero.

It should be encoded in one of three forms, as specified below: Integration of the fault isolation design to provide complete coverage, from fully automatic BITE through interactive, BITE assisted fault isolation to manual troubleshooting procedures.

ARINC – Wikipedia

If there is not any equipment identification to be reported, the member system should transmit a null value, as arinnc by the following ASN. A member system is any system which interfaces with the CMC – either directly or through a communications gateway. This data should include information such as system status including redundancy status for fault tolerant systems and other specified parameter values.


The service and interface specification for OMS communication is depending on the service provided by OSI layer protocol.

In this case, the block should begin with the fault record for the next fault in the ainc flight leg. The tools should provide the following features: The MAT should provide text and graphics for schematics, component location, wiring diagrams, and assembly diagrams as required for OMD.

Display of detailed failure arin. Thus the term fault isolation will be used in this document to cover isolation of both faults and the broader category of failures. Additional power up or user initiated tests may be added to improve the overall fault detection integrity. Numbers 0 through 30 coded in rightmost five bits: This will be particularly applicable to fault tolerant systems srinc which a first failure does not affect flight operations immediately.

It should be able to support data recording to mass storage devices such as optical disk, magnetic, or solid state recorders in a user-defined format. It involves a connection between two systems that allows electrical or optical signals to be exchanged between them. Alignment and Rigging Tests?