AIRBUSA380

ID: 17-147
Issue date: 2017-10-18
Source: EASA
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Landing Gear – Nose Landing Gear Components – Replacement [Life Limit] send comment

EASA PAD No.: 17-147


Notification of a Proposal to issue
an Airworthiness Directive
PAD No.: 17-147
Issued: 18 October 2017
Note: This Proposed Airworthiness Directive (PAD) 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.

In accordance with the EASA Continuing Airworthiness Procedures, the Executive Director is proposing the issuance of an EASA Airworthiness Directive
(AD), applicable to the aeronautical product(s) identified below.
All interested persons may send their comments, referencing the PAD Number above, to the e-mail address specified in the ‘Remarks’ section, prior to
the consultation date indicated..


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

Effective Date:
[TBD - standard: 14 days after AD issue date]
TCDS Number(s): EASA.A.110
Foreign AD: Not applicable
Supersedure: None


ATA 32 – Landing Gear – Nose Landing Gear Components – Replacement [Life Limit]


Manufacturer(s):

Airbus

Applicability:

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

Reason:

The A380 nose landing gear (NLG) manufacturer has determined that a certain batch of NLG main
fittings and NLG sliding tubes was subject to improper preparation of 300M material used in the
manufacturing process.

This condition, if not corrected, could lead to structural failure of a NLG component and consequent
NLG collapse, possibly resulting in loss of control of the aeroplane during take-off or landing.

To address this potential unsafe condition, Airbus established reduced fatigue lives for the NLG main
fittings and NLG sliding tubes affected by the degradation of 300M material quality.

For the reasons described above, this AD requires removal from service of the affected NLG main
fittings and NLG sliding tubes before exceeding the reduced life limit.


TE.CAP.00112-005 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 1 of 3
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA PAD No.: 17-147

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

Required as indicated, unless accomplished previously:

Note 1: NLG main fittings Part Number (P/N) 50-2004262-01, identified by serial number (s/n) in
Table 2 of this AD, and NLG sliding tubes P/N 50-2004248-00, identified by s/n in Table 3 of this AD,
are hereafter collectively referred to as ‘affected part’ in this AD. Any other eligible NLG main fitting
or sliding tube is referred to as ‘not affected part’ in this AD.

Note 2: For the purpose of this AD, a serviceable part is an affected part that has not exceeded the
reduced life limit defined in Table 1 of this AD, as applicable, or a not affected part that has not
exceeded its applicable life limit (see Note 3 of this AD).

Note 3: The applicable life limits for not affected parts are defined in Airbus A380 Airworthiness
Limitations Section (ALS) Part 1 as service time accumulated by a part since first installation on an
aeroplane.

Part Replacement [Reduced Life Limit]:
(1) Before exceeding the reduced life limit as identified in Table 1 of this AD, as applicable,
accumulated by an affected part (see Tables 2 and 3 of this AD) since first installation on an
aeroplane, replace the affected part (see Note 1 of this AD) with a serviceable part (see Note 2
of this AD) in accordance with approved maintenance instructions.

Table 1 – Reduced Life Limit
Affected Part (see Note 1 of this AD) Reduced Life Limit
NLG main fitting P/N 50-2004262-01 9 000 flight cycles (FC)
NLG sliding tube P/N 50-2004248-00 14 000 FC

Part Installation:
(2) From the effective date of this AD, it is allowed to install an affected part (see Note 1 of this AD)
on an aeroplane, provided the part has not exceeded the reduced life limit as defined in Table 1
of this AD and that, following installation, the affected part is replaced as required by this AD.

Table 2 – Affected NLG main fittings P/N 50-2004262-01 identified by s/n

06MDM0048 07MDM00057 08MDM0069 MDMCCH0020M
06MDM00049 07MDM0058 MDMCCH0011M MDMCCH0021M
07MDM0050 07MDM0059 MDMCCH0013A MDMCCH0022A
07MDM00051 07MDM0060 MDMCCH0014A MDMCCH0023A
07MDM0052 07MDM0061 MDMCCH0016A MDMCCH024A
07MDM00053 08MDM0063 MDMCCH0017M MDMCCH0027A
07MDM00054 08MDM0064 MDMCCH0018 MDMCCH0028R
07MDM00056 08MDM066PA MDMCCH0019M MDMCCH0029M




TE.CAP.00112-005 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 2 of 3
Proprietary document. Copies are not controlled. Confirm revision status through the EASA-Internet/Intranet.
An agency of the European Union
EASA PAD No.: 17-147

Table 3 – Affected NLG sliding tube P/N 50-2004248-00 identified by s/n

08B0057X0068 09B0064X0075
08B0058X0069 09B0056X0067

Ref. Publications:

A380 ALS Part 1 Revision 09 dated 25 September 2014, including Variation 9.4 dated 14 March 2017
and Variation 9.5 dated 06 April 2017.

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

Remarks:
1. This Proposed AD will be closed for consultation on 25 November 2017.

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

3. For any question concerning the technical content of the requirements in this PAD, please
contact: Airbus – EIANA (Airworthiness Office), Telephone: +33 562 110 253;
Fax: +33 562 110 307, E-mail: account.airworth-A380@airbus.com.




TE.CAP.00112-005 © European Aviation Safety Agency. All rights reserved. ISO9001 Certified. Page 3 of 3
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.