EASA AD No : 2011-0154 

EASA Form 110 Page 1/3 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2011-0154 

Date: 22 August 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 : 

EUROCOPTER 

Type/Model designation(s) : 

AS 365, EC 155, SA 365 and SA 366 

helicopters 

TCDS Number: DGAC France No. 159 

Foreign AD: Not Applicable 

Supersedure: This AD supersedes DGAC France AD F-2005-127 R1 dated 01 February 2006, 

EASA approval number 2006-0019, . 

ATA 67 Rotor Flight Controls – Collective Pitch Lever Restraining Tab – 

Inspection / Adjustment 

Manufacturer(s): Eurocopter (formerly Eurocopter France, Aerospatiale). 

Applicability: EC 155 B, EC 155 B1, SA 365 N, SA 365 N1, AS 365 N2, AS 365 N3 and SA 366 

G1 helicopters, all serial numbers except helicopters on which MOD 0767B65 has 

been embodied in-production or having embodied MOD 0767B65 in-service 

through accomplishment of Eurocopter AS365 Service Bulletin (SB) No. 67.00.12. 

or SA 366 SB No. 67.07 or EC 155 SB No. 67-009 Revision 1, as applicable to 

helicopter version. 

Reason: The following two occurrences have been reported to Eurocopter: 

- An in-flight inopportune collective pitch lever locking occurred when 

moving the collective pitch lever to the low-pitch position, and 

- An inopportune collective pitch lever unlocking during engine starting. 

These inopportune pitch lever locking or unlocking conditions, if not detected and 

corrected, could result respectively in the loss of control of the helicopter during 

flight or to an uncontrolled takeoff of the helicopter on ground. 

To address this unsafe condition, in 2005, Eurocopter issued AS 365 Alert Telex 

No 67.00.10, SA 366 Alert Telex No. 67.05 and EC 155 Alert Telex No. 67A007. 

These Alert Telexes were mandated by DGAC France AD F-2005-127 and 

required an inspection of the collective pitch lever for correct locking and 

unlocking conditions. 

Revision 1 of DGAC France AD F-2005-127 covered the conversion of 

Eurocopter AS 365, SA 366 or EC 155 Alert Telexes in corresponding Alert 
EASA AD No : 2011-0154 

EASA Form 110 Page 2/3 

Service Bulletins (ASB), keeping the same reference numbers (referenced 

above), and introducing additional information concerning the instructions to be 

applied to prevent the risk of collective pitch lever unlocking. 

Since issuance of DGAC France AD F-2005-127 R1, EC developed an optional 

modification, MOD 0767B65, which consists of replacing the flexible collective 

lever locking blade by an assembly comprised of a blade, a hinge and a return 

spring. The embodiment of this modification addresses the inopportune pitch lever 

locking or unlocking unsafe conditions. 

For the reasons described above, this new EASA AD supersedes DGAC France 

AD F-2005-127 R1, retaining all its requirements and excludes from the 

applicability helicopters which embody MOD 0767B65. MOD 0767B65 may be 

embodied in-service through accomplishment of Eurocopter AS365 Service 

Bulletin (SB) No. 67.00.12. or SA 366 SB No. 67.07 or EC 155 SB No. 67-009 

Revision 1. 

Effective Date: 05 September 2011 

Required action(s) 

and Compliance 

Time(s): 

Required as indicated, unless accomplished previously: 

(1) Within 50 flight hours after 20 July 2005 (the effective date of DGAC 

France AD F-2007-127 at its original issue), inspect the collective pitch 

lever for correct locking and unlocking and in case of discrepancy, 

accomplish the necessary corrective actions in compliance with the 

instructions of Eurocopter ASB AS 365 No 67.00.10 Revision 1, SA 366 

No. 67.05 Revision 1 or EC 155 No. 67A007 Revision 1, as applicable to 

helicopter version. 

(2) An inspection, as required by paragraph (1) of this AD, performed before 

the effective date of this AD in accordance with Eurocopter ASB AS 365 

No 67.00.10, SA 366 No. 67.05 or EC 155 No. 67A007, all at original 

issue, as applicable to helicopter version, is acceptable to comply with the 

requirements of this AD. 

Ref. Publications: Eurocopter AS 365 Alert Service Bulletin No. 67.00.10 Revision 1 dated 25 

February 2009. 

Eurocopter SA 366 Alert Service Bulletin No. 67.05 Revision 1 dated 25 February 

2009. 

Eurocopter EC 155 Alert Service Bulletin No. 67A007 Revision 1 dated 25 

February 2009. 

Eurocopter AS 365 Service Bulletin No. 67.00.12 dated 25 February 2009. 

Eurocopter SA 366 Service Bulletin SB No. 67.07 dated 25 February 2009. 

Eurocopter EC 155 Service Bulletin SB No. 67-009 Revision 1 dated 19 July 

2010. 

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 required actions and the risk allowance have granted the issuance of a 

Final AD with Request for Comments, postponing the public consultation 

process after publication. 

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

Section, Executive Directorate, EASA. E-mail ADs@easa.europa.eu. 
EASA AD No : 2011-0154 

EASA Form 110 Page 3/3 

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

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

13725 Marignane Cedex, France. 

Telephone +33 (0) 4 42 85 97 97, Fax +33 (0) 4 42 85 99 66 

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