AIRWORTHINESS DIRECTIVE

No F-2005-175

Distribution:

A

Issue date:

October 26, 2005

Page :

1/2

This Airworthiness Directive is published by the DGAC on behalf of 

EASA, Airworthiness Authority of the State of Design for the affected 

product, part or appliance.

Translation of « Consigne de Navigabilité » of same 

number.

In case of difficulty, reference should be made to 

the French issue.

Direction 

générale

de 

l’aviation

civile

France

GSAC

publication

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.

Corresponding foreign Airworthiness Directive(s):

Not applicable

Airworthiness Directive(s) replaced:

F-2004-059 cancelled by its Revision 1

Person in charge of airworthiness:

EUROCOPTER

Type certificate(s) No. 189

TCDS No 189

Type(s):

EC 120 helicopters

ATA chapter:

67

Subject:

Rotor flight controls - Thrust washers for cyclic stick friction

1. EFFECTIVITY:

EC 120 B helicopters having a serial number equal to or below No. 1385, and fitted with:

- Thrust washer PN C671A1006201 of the pilot cyclic stick friction device.

- Pilot cyclic sticks PN C671A1007101, C671A1007102 and C671A1003102.

Note: This Airworthiness Directive (AD) is intended for maintenance personnel and crews.

2. REASONS:

This AD is issued following sudden restriction of the cyclic stick travel in flight when retrimming the cyclic 

stick. 

This new AD:

- covers the requirements specified in AD F-2004-059 which is cancelled by its Revision 1,

- covers the requirements specified in referenced Revision 1 of EUROCOPTER EC 120 Alert Service 

Bulletin (ASB) No. 67A011 that introduces a new part number for the cyclic stick.

3. MANDATORY ACTION(S) AND COMPLIANCE TIMES:

3.1. Reminder of the measures rendered mandatory as from April 28, 2004 (effective date of AD

F-2004-059) for helicopters equipped with pilot cyclic stick PN C671A1007101 or PN C671A1007102:

3.1.1. Pending complianc e with § 3.1.2. below, it is forbidden to fly with no friction applied to the pilot 

cyclic stick. 

3.1.2. No later than within the next 550 flying hours or 6 months (the first limit reached is applicable): 

Remove the pilot cyclic stick and replace the thrust washers in compliance with the instructions 

given in § 2.B. of referenced EUROCOPTER EC 120 ASB No. 67A011 Revision 1.

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AIRWORTHINESS DIRECTIVE

No F-2005-175

Distribution:

A

Issue date:

October 26, 2005

Page:

2/2

3.2. For helicopters equipped with pilot cyclic stick PN C671A1003102, the following actions are rendered 

mandatory as from the effective date of this AD:

3.2.1. Pending compliance with § 3.2.2. below, it is forbidden to fly with no friction applied to the pilot 

cyclic stick

3.2.2. Comply with the instructions in § 2.B. and § 2.C. of the referenced ASB at the latest by

December 31, 2005.

3.3. Before installing a cyclic stick held as spares, replace the washers held in your stores, and modify the 

pilot cyclic sticks in compliance with the instructions given in § 2.B.5. of the referenced ASB.

4. REFERENCE PUBLICATION:

EUROCOPTER EC 120 Alert Service Bulletin No. 67A011 R1

(Any subsequent approved Revision of this ASB is acceptable).

5. EFFECTIVE DATE:

November 05, 2005.

6. REMARK:

For any questions concerning the technical content of the requirements in this AD, please contact:

EUROCOPTER (STXI) – Aéroport Marseille Provence, 13725 Marignane Cedex – France

Phone: +33 (0)4 42 85 97 97 – Fax: +33 (0)4 42 85 99 66

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

7. APPROVAL:

This AD is approved under EASA reference No 2005-6370 dated October 18, 2005.