Document ID: chunk:federal_register_of_legislation:F2007L01430:body:0:p1
Version: federal_register_of_legislation:F2007L01430
Segment Type: other
Provision Reference: 
Character Range: 0–3268

AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Eurocopter AS 355 (Twin Ecureuil) Series Helicopters
AD/AS 355/94  Load Compensator Levers  7/2007 TX

Applicability:  AS 355 N and AS 355 F2 helicopters.
Requirement:       1. Verify the part number (P/N) of the load compensator lever installed on the rotorcraft together with the P/N of the hydraulic actuator assembly as detailed in the accomplishment instructions of EUROCOPTER AS 355 Alert Service Bulletin (ASB) No. 67.00.29 revision 1, dated 27 April 2007 or later NAA approved revision.

                   Note 1:  Instead of inspecting the rotorcraft, a review of the helicopter maintenance records along with any other applicable data (rotorcraft logbook, Components list, etc...) is acceptable if each P/N can be positively determined from that review.

                   2. When a P/N cannot be identified, do all actions as detailed in paragraph 2.B.2.of the accomplishment instructions of AS 355 ASB No. 67.00.29 revision 1 or later NAA approved revision to determine the relevant part numbers.

                   3. For helicopters Pre-MOD 072065 (i.e. with hydraulic actuator assembly
                   355A75-1370-01 or 355A75-1370-03) on which a compensator lever P/N 355A27-0082-00 is found.

                     a. Provided the rotorcraft has not been operated with the lever P/N
                     355A27-0082-00 installed, replace the lever with a lever P/N
                     355A27-0072-00 as instructed in paragraph 2.B.3.a. of the accomplishment instructions of ASB No. 67.00.29 revision 1 or later NAA revision.

                     b. If the rotorcraft has been operated with the lever P/N 355A27-0082-00 installed, do all actions as instructed in paragraph 2.B.3.b. of the accomplishment instructions of ASB No. 67.00.29 revision 1 or later NAA revision.

                   4. For helicopters Post-MOD 072065 (i.e. with hydraulic actuator assembly 355A75-1370-02 or 355A75-1370-04) on which a compensator lever P/N 355A27-0072-00 is found.

                  a. Provided the rotorcraft has not been operated with the lever P/N
                  355A27-0072-00 installed, replace the lever with a lever P/N
                  355A27-0082-00 as instructed in paragraph 2.B.3.a. of the accomplishment instructions of ASB No. 67.00.29 revision 1 or later NAA revision.

                  b. If the rotorcraft has been operated with the lever P/N 355A27-0072-00 installed, do all actions as instructed in paragraph 2.B.3.b. of the accomplishment instructions of ASB No. 67.00.29 revision 1 or later NAA revision.

                5. Do not install: