Users Manual

ALL

EFFECTIVITY

Page 6-2

22 Apr 2019

23-15-49

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL

ASPIRE-400

(b) Supports a minimum of 5000 Historical Security Records;

exceeded.

NOTE: When the Historical Security Log is full it is acceptable to "age out" a

significant block of the oldest records (e.g. 500), rather than doing this

one record at a time, if this provides a substantial overall saving in

CPU processing time.

(2) For each security log Fault and Event that has occurred in the current flight leg, the ACD

maintains an occurrence count and record its value in any stored records.

(3) The ACD limits the maximum number of Security Log Fault and Events records of a

specific type entered per hour to 3, with additional occurrences in the hour only counted,

and all counts cleared with new flight leg.

NOTE: for intermittent faults 3 Set records and 3 clear records are expected.

(4) When the Syslog ORT option is enabled;

(a) The ACD streams 'INFO' and 'WARNING' level security records via the Syslog

protocol over the Ethernet 3 interface to the ORT configured destination IP

address.

NOTE: The INFO and WARNING levels refer to Syslog RFC3164 definitions

and not historical logging levels

(5) When the Syslog ORT option is enabled;

(a) The ACD formats Syslog messages as follows:

1 [<service>‘-‘<group>‘]:‘<sp><message-text>

2 Where the values of <service> are shown in Table 6-1 below.

Table 6-1. Service Descriptions of Syslog Messages Formatted by ACD

Service Service Description

DATALOAD

Data load service

FTST FTS

Translation Function

EMU Engine Management Unit

DFDAU Digital Flight Data Acquisition Unit

CSS Cabin Services System

3 The values for <group> are shown in Table 6-2 below.

NOTE: Please note the associated PRI section with each message

group.

DRAFT

3rd rvw Draft as of:

29 January, 2020