Document ID: chunk:federal_register_of_legislation:F2007L01430:body:0:p2
Version: federal_register_of_legislation:F2007L01430
Segment Type: other
Provision Reference: 
Character Range: 2978–5291

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:

                  - Load compensator lever P/N 355A27-0082-00 on any AS 355 N and F2 helicopters Pre-MOD 072065.(i.e. with hydraulic actuator assembly
                  355A75-1370-01 or 355A75-1370-03 installed); or

                  - Load compensator lever P/N 355A27-0072-00 on any AS 355 N and F2 helicopters Post-MOD 072065 (i.e. with hydraulic actuator assembly 355A75-1370-02 or 355A75-1370-04 installed).

             Note 2:  EASA AD 2007-0131-E dated 11 May 2007 refers.
Compliance:     1. Before further flight, after the effective date of this AD.

                2. Before further flight, after the effective date of this AD.

                  3. a. Before further flight, after the effective date of this AD.

                  b. Within 10 flight hours after the effective date of this AD.

                  4. a. Before further flight, after the effective date of this AD.

                  b. Within 10 flight hours after the effective date of this AD.

                5. From the effective date of this AD.
             This Airworthiness Directive becomes effective on 18 May 2007.

Background:  This emergency AD is issued following a report of yaw control restricted travel in operation following the replacement of the load compensator.  If not corrected, this condition could lead to the loss of control of the helicopter.  Investigation revealed that the load compensator lever was incorrectly referenced in the Illustrated Parts Catalogue (IPC).  Levers on helicopters Post-MOD 072065 (replacement of the load compensator hydraulic actuator) should be Part Number (P/N) 355A27-0082-00 and levers on helicopters Pre-MOD 072065 should be P/N 355A27-0072-00.  This AD mandates inspection to identify the load compensator lever and the hydraulic actuator assembly installed on helicopters, to verify their compatibility and replacement of improper P/Ns when an incompatibility is found.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority

15 May 2007