EASA AD No : 2011-0199R1 

EASA Form 110 Page 1/3 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0199R1 

Date: 17 February 2012 

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 EC 1702/2003, Part 21A.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]. 

Type Approval Holder’s Name : 

AIRBUS

Type/Model designation(s) : 

A330 and A340-200/-300 aeroplanes 

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

Foreign AD: Not applicable 

Revision: This AD revises EASA AD 2011-0199 dated 27 October 2011. 

ATA 22, 27 Auto Flight / Flight Controls – Flight Control Primary Computer 

(FCPC) – Modification / Replacement 

Manufacturer(s): Airbus (formerly Airbus Industrie)

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

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, except those on which Airbus modification 201654 has been 

embodied in production, or Airbus Service Bulletin (SB) A330-27-3156 has 

been incorporated in service, and 

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

aeroplanes, all manufacturer serial numbers. 

Reason: It has been determined that, when there are significant differences between all 

airspeed sources, the flight controls of an Airbus A330 or A340 aeroplane will 

revert to alternate law, the autopilot (AP) and the auto-thrust (A/THR) 

automatically disconnect, and the Flight Directors (FD) bars are automatically 

removed. 

Further analyses have shown that, after such an event, if two airspeed 

sources become similar while still erroneous, the flight guidance computers 

will display the FD bars again, and enable the re-engagement of AP and 

A/THR. However, in some cases, the AP orders may be inappropriate, such 

as possible abrupt pitch command. 

In order to prevent such events which may, under specific circumstances, 

constitute an unsafe condition, EASA issued AD 2010-0271 to require an 

amendment of the Flight Manual to ensure that flight crews apply the 

appropriate operational procedure. 

Since that AD was issued, new FCPC software standards have been 
EASA AD No : 2011-0199R1 

EASA Form 110 Page 2/3 

developed that will inhibit autopilot engagement under unreliable airspeed 

conditions. 

Consequently, EASA issued AD 2011-0199 to require software standard 

upgrade of the three FCPCs by either modification or replacement, as follows: 

- software standard P11A/M20A on FCPC 2K2 hardware for A330-200/-300 

aeroplanes, through Airbus Service Bulletin (SB) A330-27-3176, 

- software standard P12A/M21A on FCPC 2K1 hardware and M21A on FCPC 

2K0 hardware for A330-200/-300 aeroplanes, through Airbus SB A330-27-

3177, 

- software standard L22A on FCPC 2K1 hardware and L22A on FCPC 2K0 

hardware for A340-200/-300 aeroplanes, through Airbus SB A340-27-4174, 

and 

- software standard L21A on FCPC 2K2 hardware for A340-300 aeroplanes, 

through Airbus SB A340-27-4162. 

This AD is revised to : 

• correct and simplify Table 1 – Software Standard updates. The affected 

aeroplane column of Table 1 has been deleted because the aeroplane 

configuration applicable to FCPC standards is defined in Airbus SBs, 

• provide Service Bulletins issuance date and, 

• specify the consequences that compliance with this AD has for the actions 

required by EASA AD 2010-0271, EASA AD 2009-0012, and EASA AD 

2010-0081. 

Effective Date: Revision 1 : 02 March 2012 

Original issue : 10 November 2011 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within 10 months after 10 November 2011 [the effective date of this AD at 

original issue], modify or replace the three FCPCs, as specified in Table 1 

of this AD, in accordance with the instructions of Airbus SB A330-27-3176, 

or SB A330-27-3177, or SB A340-27-4162, or SB A340-27-4174, as 

applicable to aeroplane type and model. 

Table 1 – Software Standard updates 

Software Standard update(s) Airbus SB 

software standard P11A/M20A on 

FCPC 2K2 hardware 

SB A330-27-3176 

software standard P12A/M21A on 

FCPC 2K1 hardware, and 

software standard M21A on FCPC 

2K0 hardware 

SB A330-27-3177 

software standard L22A on FCPC 

2K1 hardware, and 

software standard L22A on FCPC 

2K0 hardware 

SB A340-27-4174 

software standard L21A on FCPC 

2K2 hardware 

SB A340-27-4162 

(2) After modification of an aeroplane as required by paragraph (1) of this AD, 

the operational procedures as imposed by EASA AD 2009-0012-E and 

EASA AD 2010-0271 are no longer required for that aeroplane. 

(3) Modification of an aeroplane as required by paragraph (1) of this AD 

constitutes compliance with the modification of the three FCPCs as 

required by paragraph (8) of EASA AD 2010-0081 for that aeroplane. 
EASA AD No : 2011-0199R1 

EASA Form 110 Page 3/3 

Ref. Publications: Airbus SB A330-27-3176 original issue dated 26 July 2011. 

Airbus SB A330-27-3177 original issue dated 21 December 2011. 

Airbus SB A340-27-4162 original issue dated 10 January 2012. 

Airbus SB A340-27-4174 original issue dated 21 November 2011. 

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. The original issue of this AD was posted on 02 August 2011 as PAD 11-

081 for consultation until 30 August 2011. 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