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EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2006-0344 R1 

Date: 10 May 2007 

No person may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the 

requirements of that Airworthiness Directive unless otherwise agreed with the Authority of the State of Registry.

Type Approval Holder’s Name: 

EUROCOPTER 

Type/Model designation(s): 

EC 130 B4 Helicopters 

TCDS Number: EASA R.008 

Foreign AD: Not applicable 

Revision/Supersedure: This AD revises EASA Emergency AD 2006-0344-E 

ATA 25 

Equipment & Furnishings – Emergency Flotation Gear – Electrical 

Harnesses and Attachment – Check / Repair / Replacement / 

Installation 

Manufacturer(s): EUROCOPTER 

Applicability: 

EC 130 B4 helicopters, all serial numbers, and modified per MOD 073774 

(Installation of screws/nuts in place of the attachments of the lower fairings with 

“blind” nuts) and not embodying MOD 073591 or drawing 350A085340. 

Reason: 

The initial issue of this Airworthiness Directive (AD) was issued as an 

Emergency AD, following a report of an incident in flight which led to the 

inflation of the emergency floatation gear and the activation of various 

warnings. The pilot was able to land the helicopter without damage. 

Investigations have revealed that a screw that secures the RH lower center 

fairing interfered with an electrical harness and caused several short circuits, 

resulting in the described incident. 

The purpose of this AD is to prevent, on helicopters post MOD 073774, any 

interference between the electrical harnesses and the bottom structure fairing 

attachment screws 

Embodiment of a modification in accordance with Eurocopter drawing 

350A085342 is considered as a temporary solution to be applied rapidly in 

order to ensure that there is no interference. Embodiment of a modification in 

accordance with Eurocopter drawing 350A085340 is the permanent solution 

that can be applied directly according to the availability of the helicopter and 

the components. This AD has been revised to provide additional information 

that MOD 073591, incorporated on new helicopters, is also the permanent 

solution for the problem that caused the reported incident. 

Effective Date: 15 November 2006 
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Compliance: 

(1) For EC 130 B4 helicopters not modified in accordance with Eurocopter 

DWG No 350A085342: 

 Within 10 flight hours after the effective date this AD, check the condition of 

the electrical harnesses and their attachments, carry out the corrective 

actions if necessary and protect the electrical harnesses in accordance 

with the instructions described in paragraphs 2.B.1 through 2.B.3 

(corresponding to DWG No 350A085342) and 2.B.5 of the referenced Alert 

Service Bulletin (ASB); 

Note: Compliance with the requirements of paragraph (2) of this AD within 10 

flight hours makes compliance with paragraph (1) redundant. 

(2) For all EC 130 B4 helicopters affected by this AD: 

 

 Within 550 flight hours or within 2 years after the effective date of this AD, 

whichever occurs first, check the condition of the electrical harnesses, 

carry out, as necessary, the corrective actions and install the clamp blocks 

as instructed in paragraphs 2.B.1, 2.B.2.a, 2.B.4 (corresponding to DWG 

No 350A085340) and 2.B.5 of the referenced ASB. 

Ref. Publications: EUROCOPTER EC 130 B4 Alert Service Bulletin No 88A001 or later approved 

revisions. 

Remarks:

1. If requested and appropriately substantiated the responsible EASA 

manager for the related product has the authority to accept Alternative 

Methods of Compliance (AMOCs) for this AD. 

2. The safety assessment had requested not to implement the full 

consultation process and an immediate publication and notification for the 

initial issue of this directive as an Emergency AD on 13 November 2006. 

3. Enquiries regarding this AD should be addressed to AD Focal Point, 

Certification Directorate, EASA; E-mail: ADs@easa.europa.eu .

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

this AD, please contact: EUROCOPTER (STDI) - Aéroport de Marseille 

Provence 13725 Marignane Cedex - France. 

Tel: 33 (0) 4 42 85 97 97 - Fax: 33 (0) 4 42 85 99 66. 

E-mail: Directive.technical-support@eurocopter.com