Air data inertial reference unit: Difference between revisions

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Malaysia Airlines Flight 124: sentence rewrite for clarity
Rescuing 1 sources and tagging 0 as dead. #IABot (v2.0beta14)
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|accessdate=14 July 2008
|year=2008
|archive-url=https://web.archive.org/web/20110525194835/https://www.arinc.com/cf/store/catalog_detail.cfm?item_id=280
}}</ref> The No 3 ADIRU is a [[Redundancy (engineering)|redundant]] unit that may be selected to supply data to either the commander's or the co-pilot's displays in the event of a partial or complete failure of either the No 1 or No 2 ADIRU. There is no cross-channel redundancy between the Nos 1 and 2 ADIRUs, as No 3 ADIRU is the only alternate source of air and inertial reference data. An inertial reference (IR) fault in ADIRU No 1 or 2 will cause a loss of [[Angle of attack|attitude]] and navigation information on their associated [[EFIS#Primary flight display (PFD)|primary flight display]] (PFD) and navigation display (ND) screens. An air data reference (ADR) fault will cause the loss of airspeed and altitude information on the affected display. In either case the information can only be restored by selecting the No 3 ADIRU.<ref name="art5" />
|archive-date=25 May 2011
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}}</ref> The No 3 ADIRU is a [[Redundancy (engineering)|redundant]] unit that may be selected to supply data to either the commander's or the co-pilot's displays in the event of a partial or complete failure of either the No 1 or No 2 ADIRU. There is no cross-channel redundancy between the Nos 1 and 2 ADIRUs, as No 3 ADIRU is the only alternate source of air and inertial reference data. An inertial reference (IR) fault in ADIRU No 1 or 2 will cause a loss of [[Angle of attack|attitude]] and navigation information on their associated [[EFIS#Primary flight display (PFD)|primary flight display]] (PFD) and navigation display (ND) screens. An air data reference (ADR) fault will cause the loss of airspeed and altitude information on the affected display. In either case the information can only be restored by selecting the No 3 ADIRU.<ref name="art5" />
 
Each ADIRU comprises an ADR and an inertial reference (IR) component.<ref name="urlA330 - Navigation">{{cite web|publisher=smartcockpit.com |url=http://www.smartcockpit.com/pdf/plane/airbus/A330/systems/0019/ |archive-url=https://archive.is/20070115043457/http://www.smartcockpit.com/pdf/plane/airbus/A330/systems/0019/ |dead-url=yes |archive-date=15 January 2007 |title=Airline training guides, Aviation, Operations, Safety -Navigation A330 |work= |accessdate=12 June 2009 }}</ref>