Only 2 facts:
2008, Airbus ACA story
AF447 - the Air Caraibes story and more on pitot tubes - Unusual Attitude
and october 2008 QT72
Aircrew Buzz: Qantas Flight QF72 Emergency Landing at Learmonth, Australia
Serious Injuries on a Qantas A330 on 7 October 2008
MEDIA RELEASE : 14 October 2008 - Qantas Airbus A330 accident Media Conference
(Notice: also same event for Australian B777).
Eight or nine (small) similar AF occurencies since 2008
What had be done?
This is a copy of:
Sam Juil 17, 2010 18:44
EASA AD No.: 2009-0012-E
EASA Form 111 Page 2/3
systems, EASA AD 2008-0203-E was issued to require, in case faulty Inertial
Reference (IR) is detected, to isolate both the IR and ADR by accomplishment of
a modified Aircraft Flight Manual (AFM) operational procedure.
Since that AD was issued, it has been reported that the “OFF” light did not
illuminate in the cockpit after setting the IR and ADR pushbuttons to OFF.
Investigation has determined that the ADIRU was indeed sometimes affected by
another failure condition.
To prevent such a failure, the operational procedure has been updated to
instruct the flight crew to de-energize the ADIRU if the “OFF” light is not
illuminated after setting the IR and ADR pushbuttons to OFF. Consequently,
AD 2008-0225-E, which superseded AD 2008-0203-E, required accomplishment
of the updated AFM operational procedure.
Since this second AD was issued, a new in service event has been reported
highlighting that, in some failure cases, even though the “OFF” light illuminates in
the cockpit after setting the IR and ADR pushbuttons to OFF, the IR could keep
providing erroneous data to other systems.
In order to address all identified failure cases, de-energizing the affected ADIRU
must be done by setting the IR mode rotary selector to OFF. Consequently, this
AD, which supersedes AD 2008-0225-E, requires accomplishment of the
updated AFM operational procedure.
Effective Date: 19 January 2009
Required Action(s)
and Compliance
Time(s):
Required as indicated:
1. From the effective date of this AD, apply the following operational procedure:
- NAV - IR 1 (2) (3) FAULT
Turn off the affected IR.
Turn off the corresponding ADR.
Set the affected IR mode rotary selector to OFF.
Use AIR DATA switching as appropriate.
Use ATT HDG switching as appropriate.
- NAV - IR 1+2 (2+3) (1+3) FAULT
Note: Flight controls are in alternate law. Refer to F/CTL – ALTN LAW
(chapter 4 of the AFM)
Turn off the affected IRs.
Easy!