EASA AD No.: 2013-0201

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EASA AIRWORTHINESS DIRECTIVE

AD No.: 2013-0201

Date: 04 September 2013

Note: This Airworthiness Directive (AD) is issued by EASA, acting in accordance with 

Regulation (EC) No 216/2008 on behalf of the European Community, 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 EU 748/2012, Part 21.A.3B. In accordance with EC 2042/2003 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 

[EC 2042/2003 Annex I, Part M.A.303] or agreed with the Authority of the State of Registry [EC 216/2008, Article 14(4) exemption].

Design Approval Holder’s Name:

AIRBUS

Type/Model designation(s):

A330 and A340 aeroplanes

TCDS Numbers: EASA.A.004, EASA.A.015

Foreign AD: Not applicable

Supersedure: None

ATA 21 Air Conditioning – Cabin Pressure Control System Safety Valve –

Replacement

Manufacturer(s): Airbus (formerly Airbus Industrie)

Applicability: Airbus A330-201, A330-202, A330-203, A330-223, A330-243, A330-223F, 

A330-243F, A330-301, A330-302, A330-303, A330-321, A330-322, A330-323, 

A330-341, A330-342 and A330-343 aeroplanes, all manufacturer serial 

numbers.

Airbus A340-211, A340-212, A340-213, A340-311, A340-312, A340-313, 

A340-541, A340-542, A340-642 and A340-643 aeroplanes, all manufacturer 

serial numbers.

Reason: Investigation results on the Cabin Pressure Control System (CPCS) safety 

valve demonstrate that this part is subject to repetitive restoration every 50 000

flight hours (FH) or 12 years, but this airworthiness instruction is not yet 

reflected in the instructions for continuing airworthiness. Moreover, this safety 

valve, part of the CPCS, is not failure monitored.

In order to maintain the required safety objectives, the CPCS safety valves

must be replaced by a serviceable part no later than the above values.

For the reasons described above, this AD requires repetitive replacement of 

CPCS safety valves.

Effective Date: 18 September 2013
EASA AD No.: 2013-0201

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Required Action(s) 

and Compliance

Time(s):

Required as indicated, unless accomplished previously:

(1) Within the compliance time defined in Table 1 of this AD, and, thereafter,

at intervals not to exceed 50 000 FH, or 12 years accumulated by the 

CPCS safety valve, whichever occurs first, replace the CPCS safety valve 

with a serviceable part in accordance with the instructions of Airbus SB 

A330-21-3154 Revision 01, SB A340-21-4150 Revision 01, or SB

A340-21-5044 Revision 01, as applicable to the aeroplane type.

Table 1 – CPCS Safety Valve Replacement

CPCS safety valve 

condition

Compliance time, whichever occurs later,

A or B

FH accumulated by

the CPCS safety 

valve are known

A Before the safety valve has

accumulated 50 000 FH or 12 years, 

whichever occurs first since its first 

installation on an aeroplane or since its 

last restoration, as applicable

B Within 26 months after the effective 

date of this AD

FH accumulated by

the CPCS safety 

valve are unknown

Within 26 months after the effective date of 

this AD

Note: For the purpose of this AD, a serviceable CPCS safety valve is a safety 

valve which has not exceeded, as applicable:

- 12 years since its manufacturing date or 50 000 FH since first 

installation on an aeroplane, whichever occurs first, or 

- 12 years since its last restoration, or 50 000 FH since its last 

restoration, whichever occurs first.

(2) Accomplishment of A330 Maintenance Review Board Report (MRBR)

task No. 21.31.00/09 or A340 MRBR task No. 21.31.00/09, as applicable 

to aeroplane type, constitutes compliance with the requirements of 

paragraph (1) of this AD.

Ref. Publications: Airbus SB A330-21-3154 original issue dated 17 November 2011, or

Revision 01 dated 10 April 2013.

Airbus SB A340-21-4150 original issue dated 17 November 2011, or

Revision 01 dated 10 April 2013.

Airbus SB A340-21-5044 original issue dated 17 November 2011, or

Revision 01 dated 10 April 2013.

The use of later approved revisions of these documents 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. This AD was posted on 11 December 2011 as PAD 11-134 for 

consultation until 10 January 2012 and republished on 03 June 2013 as 

PAD 11-134R1 for additional consultation until 17 June 2013. The 

Comment Response Document can be found at http://ad.easa.europa.eu.

3. Enquiries regarding this AD should be referred to the Safety Information 

Section, Executive Directorate, EASA. E-mail: ADs@easa.europa.eu.

4. For any question concerning the technical content of the requirements in 

this AD, please contact: AIRBUS – Airworthiness Office – EIAL;

E-mail: airworthiness.A330-A340@airbus.com.