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## EASA AIRWORTHINESS DIRECTIVE

AD No : 2007- 0099

Date: 11 April 2007

No person may operate an aircraft to which an Airworthines s Directive applies, except in accordance with the requirements of that Airworthiness Directive unless otherwi se agreed with the Authority of the State of Registry.



### Type Approval Holder’s Name :

EUROCOPTER Type/Model designation(s) :

AS 332, SA 365 N, AS 365 N, SA 366, EC 155,AS 355, EC 130 and AS 350 helicopters.

TCDS Number: EASA.R.002, DGAC FR ANCE 159, EASA.R.146 and EASA.R.008.

Foreign AD: Not applicable

Supersedure: Not applicable



### ATA 67 Rotors Flight Control – Main & Tail Rotors Servo-Controls – Inspection / Modification

Manufacturer(s): EUROCOPT ER (Formerly EUROCOPTER - FRANCE,AEROSPATIALE)

Applicability: - AS 332 C, C1, L, L1 and L2, - SA 365 N and N1, AS 365 N2 and N3, SA 366 G1, EC 155 B and B1, - AS 355 F, F1, F2 and N, and - EC 130 B4, AS 350 B3, EUROCOPTER helicopters, all serial nu mbers (s/n) that are equipped with main and tail rotor GOODRICH servo-controls without the letter “R” marked in the inspection box of the servo-control identification plate, and whose part numbers (p/n) and s/n are listed in paragraph 1.A. of the relevant EUROCOPTER Alert Service Bulletin (ASB) in table 1 below.

For Refer to

AS 332 AS 332 ASB No. 67.00.37

AS 365 & SA 365 AS 365 ASB No. 67.00.13

SA 366 SA 366 ASB No. 67.082/3 For Refer to

EC 155 EC 155 ASB No. 67A010

AS 355 AS 355 ASB No. 67.00.28

EC 130 EC 130 ASB No. 67A010

AS 350 AS 350 ASB No. 67.00.40

Table 1

Reason: This Airworthiness Directive (AD) is issued following a manufacturing nonconformity found on one batch of servo-control cap p/n. 800137. With a defective servo-control, rota tion of the distributor might not be stopped mechanically since only friction of inner seals holds the distributor sleeve in its position.If not corrected this condition could cause untimely movements of servocontrols, which are used on main and anti-torque rotors, and lead to the loss of control of the helicopter. The aim of this AD is to identify t he defective servo-controls either in service or on shelf and to return them to the supplier so as to be modified and returned to conformity.

Effective Date: 25 April 2007

Compliance: 1. Within 2 months from the effect ive date of the present AD, check for identification the servo controls installed on helicopters and on the shelves, with reference to the paragraph (§) 1.A of the applicable Eurocopter ASB given in table 1.

2. At the latest on the next removal of the servo-controls not to exceed 2

years from the effective date of this AD, return the identified defective servo-controls per the § 1. of this AD, as instructed in the accomplishment instruct ions of the applicable Eu rocopter ASB given in table 1.
3. As of 25 April 2009, no person shall install servo controls whose p/n and

s/n are listed in the applicable Euro copter ASB given in table 1. on any Eurocopter helicopters unless they have been previously returned to conformity to be compliant with the relevant Eurocopter ASB given in table 1

Ref. Publications: EUROCOPTER AS 332 Alert Service Bulletin No. 67.00.37. AS 365 ASB No. 67.00.13. SA 366 ASB No. 67.08. EC 155 ASB No. 67A010. AS 355 ASB No. 67.00.28. EC 130 ASB No. 67A010. AS 350 ASB No. 67.00.40. or later approved revisions..3/3 Remarks : 1. If requested and appropriately su bstantiated the responsible EASA manager for the related product has the authority to accept Alternative Methods of Compliance (AMOCs) for this AD. 2. This AD was posted as PAD 07-035 for consultation on 07 March 2007

with a comment period until 04 April 2007. No comments were received during the consultation period. 3. Enquiries regarding this Airworthiness Directive should be referred to

the AD Focal Point - Certification Directorate, EASA. E-mail: ADs@easa.europa.eu

. 4. For any question concerning the tech nical content of the requirements in

this AD, please contact: EUROCOPTER 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