Originally Posted by xcitation
Failed flight attitude data on PFDs, no backup steam guage style AI instrument installed. [A330 ADIRU failures: 21 May 2009 Miami-Sao Paulo TAM Flight 8091 registered as PT-MVB and on a 23 June 2009 Hong Kong-Tokyo Northwest Airlines Flight 8 registered as N805NW]
Please, could we have a quote from those flight reports showing an
Attitude data failed on PFDs?
Where did you get that? Those are UAS reports, no trace of IR faults.
No backup steam gauge? Well there is an ISIS, which is the 4th source of Attitude indication! (considering that the backup ADIRU3 may be displayed in either PFD in case of 1 or 2 IR channel failure)
