1/2 

EASA AIRWORTHINESS DIRECTIVE 

AD No.: 2006-0318 R1 

Date: 27 October 2006

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 DEUTSCHLAND GmbH 

Type/Model designation(s) :

EC 135 

TCDS Number : EASA R.009 

Foreign AD : Not applicable. 

Revision/Supersedure : This AD revises and supersedes AD 2006-0318 dated October 18, 2006, 

including the ‘correction’ thereof, published October 20, 2006. 

ATA 67

Rotorcraft Flight Control – T/R Control Linear Transducer 

(LVDT Collective) Bearing– Inspection/Replacement 

 & 

Rod and Floor Modification

Manufacturer(s): Eurocopter Deutschland GmbH 

Applicability: 

EC 135 helicopter, all models, having the following components installed: 

Bearing Part Number (P/N) LN9367GE6N2, Rod P/N L671M5040205, 

Lever P/N L671M5040101 and Floor P/N L533M1014101, 

L533M1014102, L533M1014103, L533M1014104, L533M1014105 or 

L533M1014106 

Spare Parts affected: 

Rod P/N L671M5040205, Lever P/N L671M5040101, Floor P/N 

L533M1014101, L533M1014102, L533M1014103, L533M1014104, 

L533M1014105 and L533M1014106. 

Reason: 

EASA has been informed of an incident in which an impaired controllability 

of the EC 135 tail rotor was detected. Examinations have shown that the 

bearing of the linear transducer was subject to binding and the control 

range was limited. 

Eurocopter Deutschland (ECD) has issued an Alert Service Bulletin (ASB) 

that addresses the unsafe condition described above. 

This Airworthiness requires the inspection and, if necessary, replacement 
2/2 

of the Tail Rotor Control linear transducer bearing and the modification of 

the rod and floor. 

This AD has been corrected to reference the EASA TCDS that has 

superseded the LBA Kennblatt No.3061. 

This AD has been revised to clarify the modification requirements and to 

confirm that modification of the rod may be postponed until the next 

scheduled inspection (800 flight hours). Reference to the revised 

Eurocopter Deutschland ASB is now included. 

Effective Date: 20 October 2006 

Compliance: 

(1) Not later than October 31, 2006, inspect the affected bearing and 

modify the floor in accordance with the instructions of ECD ASB 

EC135-67A-012. 

(2) If there is binding and/or abrasion on the floor, before the next flight, 

replace the bearing in accordance with the instructions of ECD ASB 

EC135-67A-012. 

(3) Not later than at the next scheduled inspection (800 flight hours), 

modify the rod in accordance with the instructions of ECD ASB 

EC135-67A-012. 

(4) After the inspection as required by paragraph (1) of this directive, at 

intervals not to exceed 800 flight hours, repeat the inspection of the 

affected bearing in accordance with the instructions of ECD ASB 

EC135-67A-012 and, if necessary, accomplish corrective action as 

required by paragraph (2) of this directive. 

(5) After the effective date of this directive, no person may install any 

component held as spare part [as listed in the applicability section of 

this directive] into a helicopter, unless it has been modified in 

accordance with the instructions of ECD ASB EC135-67A-012. 

Ref. Publications: Eurocopter Deutschland EC 135 ASB No. EC135-67A-012 Revision 1 

dated 18 October 2006 or a later approved revision. 

Remarks : 

1. If requested and appropriately substantiated the responsible EASA 

manager for the related product has the authority to accept Alternative 

Method of Compliance (AMOCs) for this AD. 

2. This AD was posted as PAD 06-225 for consultation on 13 September 

2006 with a comment period until 27 September 2006. No comments 

were received during the consultation period. 

3. Enquiries regarding this Airworthiness Directive should be referred to 

the Airworthiness Directive 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 Deutschland GmbH 

P.O. Box 80 11 40 

81663 München 

Federal Republic of Germany 

Phone: + 49 (0) 89 6000-9137 

Fax: + 49 (0) 89 6000 6060