AD/ECUREUIL/127 - Main & Tail Rotors Servo Controls (Cth)

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 350 (Ecureuil) Series Helicopters AD/ECUREUIL/127 Main & Tail Rotors Servo Controls 7/2007 TX

Applicability: EUROCOPTER helicopters models AS 350 B, BA, BB, B1, B2, B3 and D equipped with GOODRICH main rotor servo-controls and tail rotor servo-controls with no letter "C" marked in the inspection box of the servo-control identification plate, and with the following Part Numbers (P/N) and Serial Numbers (S/N):

- Main rotor servo-controls

P/N SC5083 with S/N 270M, 272M, 409M, 423M, 452M or 1573

P/N SC5083-1 with S/N from 2902 to 2921, inclusive

P/N SC5084 with S/N 30, 84, 104, 186, 438, 575 or 695

P/N SC5084-1 with S/N from 1462 to 1481 inclusive.

And

- Tail rotor servo-controls:

P/N SC5072 with serial number 222M, 306M or 309. Requirement: 1. Verify the P/N and S/N of the main rotor and tail rotor servo-controls in accordance with paragraph 1.E.2. of EUROCOPTER Alert Service Bulletin (ASB) No. 01.00.58 Revision 1 or later NAA approved revision.

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 and S/N can be positively determined from that review.