AIRBUSA380

ID: 2017-0209
Issue date: 2017-10-18
Effective date: 2017-10-25  
Source: EASA
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Integrated Modular Avionics – Internal Timer – Power Cycle (Reset)

EASA AD No.: 2017-0209


Airworthiness Directive
AD No.: 2017-0209
Issued: 18 October 2017
Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with Regulation
(EC) 216/2008 on behalf of the European Union, its Member States and of the European third
countries that participate in the activities of EASA under Article 66 of that Regulation.

This AD is issued in accordance with Regulation (EU) 748/2012, Part 21.A.3B. In accordance with Regulation (EU) 1321/2014 Annex I, Part M.A.301, the
continuing airworthiness of an aircraft shall be ensured by accomplishing any applicable ADs. Consequently, no person may operate an aircraft to which
an AD applies, except in accordance with the requirements of that AD, unless otherwise specified by the Agency [Regulation (EU) 1321/2014 Annex I,
Part M.A.303] or agreed with the Authority of the State of Registry [Regulation (EC) 216/2008, Article 14(4) exemption].


Design Approval Holder’s Name: Type/Model designation(s):
AIRBUS A380 aeroplanes

Effective Date:
25 October 2017
TCDS Number(s): EASA.A.110
Foreign AD: Not applicable
Supersedure: None


ATA 42 – Integrated Modular Avionics – Internal Timer – Power Cycle (Reset)


Manufacturer(s):

Airbus

Applicability:

Airbus A380-841, A380-842 and A380-861 aeroplanes, all serial numbers.

Reason:

Prompted by in-service events on Airbus aeroplane where a loss of communication occurred
between some avionics systems and avionics network, analysis has shown that this may occur after
149 hours of continuous aeroplane power-up. Depending on the affected aeroplane systems or
equipment, different consequences have been observed and reported by operators, from
redundancy loss to complete loss on a specific function hosted on common remote data
concentrator and core processing input/output modules.

This condition, if not corrected, could lead to partial or total loss of some avionics systems or
functions, possibly resulting in an unsafe condition.

To address this potential unsafe condition, Airbus issued Alert Operators Transmission (AOT)
A42R002-17 (hereafter referred to as ‘the AOT’ in this AD) to provide instructions to reset the
internal timer.

For the reasons described above, this AD requires repetitive on ground power cycles (resets).

TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 1 of 2
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA AD No.: 2017-0209

This AD is considered to be an interim measure and further AD action may follow.

Required Action(s) and Compliance Time(s):

Required as indicated, unless accomplished previously:

Repetitive Power Cycle (Reset):
(1) Within 30 days after the effective date of this AD, and, thereafter, at intervals not to exceed
149 hours of continuous power-up (as defined in the AOT), accomplish an on ground power
cycle in accordance with the instructions of the AOT.

Terminating Action:
(2) None.

Ref. Publications:

Airbus AOT A42R002-17 original issue dated 14 August 2017.

The use of later approved revisions of this document is acceptable for compliance with the
requirements of this AD.

Remarks:
1. If requested and appropriately substantiated, EASA can approve Alternative Methods of
Compliance for this AD.

2. Based on the required actions and the compliance time, EASA have decided to issue a Final AD
with Request for Comments, postponing the public consultation process until after publication.

3. Enquiries regarding this AD should be referred to the EASA Safety Information Section,
Certification Directorate. E-mail: ADs@easa.europa.eu.

4. For any question concerning the technical content of the requirements in this AD, please
contact: AIRBUS - EIANA (Airworthiness Office), E-mail: account.airworth-A380@airbus.com.




TE.CAP.00110-006 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 2
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union

This is a partial extract of the full document - please refer to the actual report for full information.
Sources as credited.