AD Number:
AD/A320/174 Air Data/Inertial Reference Unit 6/2005 DM
Applicability: Model A318, A319, A320 and A321 series
aeroplanes equipped with at least one Northrop-Grumman (previously
Litton) Air Data/Inertial Reference Unit (ADIRU) (AIRBUS
modification 24852 or 25108 or 25336 or 26002 or 28218). Requirement: Operational dispatch of the aircraft
with one ADIRU inoperative will be authorized under the following
conditions:
Stand-by compass operative
Stand-by attitude indicator operative.
For aircraft equipped with conventional standard instruments,
compliance with A318/319/320/321 Master Minimum Equipment List
(MMEL) Temporary Revision (TR) No 01-34/02Z issue 02 is an
acceptable means of compliance with this Directive. For aircraft
equipped with Integrated Standby Instruments System (ISIS) (AIRBUS
modification 27620/ AIRBUS Service Bulletin A320-34-1261),
compliance with A318/319/320/321 MMEL TR No 01-34/07Z issue 01 is
an acceptable means of compliance with this Directive.
Note: DGAC AD F-2005-029 R1 (EASA approval 2005-2242) refers.
Compliance: Before 11 May 2005.
This Airworthiness Directive becomes effective on 4 May 2005.
Background: The French Direction Generale de
l’Aviation Civile (DGAC) advised that some instances of loss
of inertial references have been reported which could reduce the
control of the aircraft due to the non-availability of some
parameters (attitude, vertical speed, ground speed,…).
Subsequent investigation identified the loss of the parameters as
being caused by the ADIRU striking the bottom of the upper shelf.
AD/A320/138 mandated the modification of the ADIRU shelf supports
in an attempt to prevent contact between the ADIRUs and the upper
shelf. These measures have not proved sufficient. This Directive
introduces revised despatch limitations for the MMEL.
Also: B-29 Superfortress Reunion, FAA Wants Controllers, Spirit Airlines Pulls Back, Gogo Galileo Van's Aircraft posted a short video recapping the goings-on around their reorganiz>[...]
Light Gun A handheld directional light signaling device which emits a brilliant narrow beam of white, green, or red light as selected by the tower controller. The color and type of>[...]
"The journey to this achievement started nearly a decade ago when a freshly commissioned Gentry, driven by a fascination with new technologies and a desire to contribute significan>[...]
"Our driven and innovative team of military and civilian Airmen delivers combat power daily, ensuring our nation is ready today and tomorrow." Source: General Duke Richardson, AFMC>[...]
Aircraft Conflict Predicted conflict, within EDST of two aircraft, or between aircraft and airspace. A Red alert is used for conflicts when the predicted minimum separation is 5 na>[...]