EASA AD No : 2011-0054 

EASA Form 110 Page 1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0054 

Date: 24 March 2011 

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) : 

A318, A319, A320 and A321 aeroplanes 

TCDS Number : EASA.A.064 

Foreign AD : Not applicable. 

Supersedure : None 

ATA 92 Electric and Electronic Common Installation – Terminal Modules – 

Identification / Replacement 

Manufacturer(s): Airbus (formerly Airbus Industrie) 

Applicability: Airbus A318-112, A319-111, A319-112, A319-115, A319-132, A319-133, 

A320-214, A320-216, A320-232, A320-233, A321-211, A321-213 and 

A321-231 aeroplanes, manufacturer serial numbers (MSN) 3603, 3605, 3607, 

3610, 3613, 3615 to 3619 inclusive, 3622 to 3627 inclusive, 3629, 3631 to 

3634 inclusive, 3636, 3639, 3645, 3647, 3653, 3655, 3657, 3660, 3661, 3663, 

3671, 3675, 3687, 3689, 3691, 3694, 3696, 3700, 3702, 3704 and 3705. 

Reason: Electrical discontinuity has been detected on terminal modules Part Number 

(P/N) NSA 937901M1604, manufactured by Deutsch, due to an insufficient 

crimping of the female contacts on the shunt, caused by a wrong setting of the 

crimping tool. 

The investigations revealed that this manufacturing quality deficiency is 

related only to modules P/N NSA 937901M1604 with manufacturing date 

codes 08-14 and 08-18. 

This condition, if not corrected, could potentially result in in-flight failure of the 

Electrical Flight Control System (EFCS) and consequent loss of control of the 

aeroplane. In addition, this condition could lead to a non detected passenger 

oxygen loss, which, in case of emergency, could result in a large number of 

passenger oxygen masks not being supplied with oxygen, possibly causing 

personal injuries. 

For the reasons described above, this AD requires the identification and 

replacement of the affected terminal modules. This AD also prohibits the 

installation of the affected modules on any aeroplane as replacement parts. 

Effective Date: 07 April 2011 
EASA AD No : 2011-0054 

EASA Form 110 Page 2/2 

Required Action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within 600 flight hours after the effective date of this AD, identify the 

manufacturing date code of each Deutsch module P/N NSA 

937901M1604 installed on the aeroplane, which can be installed on 

electronics rack 103VU, pylon harnesses, S15/19 harnesses and/or 

electronics rack 80VU, as applicable to the aeroplane MSN. 

(2) If any module with manufacturing date code 08−14 is installed on the 

electronics rack 103VU, pylon harnesses and/or S15/19 harnesses, or if 

any module with manufacturing date code 08-14 or 08-18 is installed on 

the electronics rack 80VU, as applicable to the aeroplane MSN, before 

next flight, replace each affected module with a serviceable part, having 

the same P/N but a different date code, in accordance with the 

instructions of Airbus Service Bulletin (SB) A320-92A1072. 

(3) After modification of an aeroplane as required by paragraph (2) of this 

AD, do not install a Deutsch module P/N NSA 937901M1604 with a 

manufacturing date code of 08-14 or 08-18 on that aeroplane. 

Ref. Publications: Airbus Service Bulletin A320-92A1072 at original issue. 

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. This AD was posted on 08 February 2011 as PAD 11-017 for consultation 

until 08 March 2011. No comments were received during the consultation 

period. 

3. Enquiries regarding this AD should be referred to the Airworthiness 

Directives, Safety Management & Research Section, Certification 

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 – EAS 

Fax +33 5 61 93 44 51, E-mail: account.airworth-eas@airbus.com.