2010-22-08: Main rotor servo-controls and tail rotor servo-controls

2010-22-08 Eurocopter France: Amendment 39-16487; Docket No. FAA- 2010-0611; Directorate Identifier 2009-SW-18-AD. Applicability: Model AS 350 B, BA, B1, B2, B3, and D, and Model AS355 E, F, F1, F2, and N helicopters, with a main rotor or tail rotor servo-control identified in Table 1, installed, certificated in any category. Table 1 Component Part No. (P/N) Serial No. (S/N) P/N SC5083 S/N 270M, 272M, 409M, 423M, 452M, or 1573 P/N SC5083-1 S/N 2902 through 2921, inclusive P/N SC5084 S/N 30, 84, 104, 186, 438, 575, or 695 Main rotor servo-control P/N SC5084-1 S/N 1462 through 1481, inclusive Tail rotor servo-control P/N SC5072 S/N 222M, 306M, or 309 Compliance: Required, as indicated. To prevent the distributor slide valve jamming in its sleeve, leading to reduced controllability of the rotors and subsequent loss of control of the helicopter, accomplish the following: (a) Within the next 50 hours time-in-service (TIS), or when a "hard point"is detected in the flight controls, whichever occurs earlier, replace each installed servo control that has a serial number listed in Table 1 of this AD, with an airworthy servo control. Note 1: Eurocopter EASB No. 01.00.58 and No. 01.00.53, both Revision 1, and dated April 19, 2007, which are not incorporated by reference, contain additional information about the subject of this AD. (b) To request a different method of compliance or a different compliance time for this AD, follow the procedures in 14 CFR 39.19. Contact the Manager, Safety Management Group, Rotorcraft Directorate, FAA, ATTN: J. R. Holton, Aviation Safety Engineer, Regulations and Policy Group, ASW-111, 2601 Meacham Blvd., Fort Worth, Texas 76137, telephone (817) 222-4964, fax (817) 222-5961, for information about previously approved alternative methods of compliance. (c) The Joint Aircraft System/Component (JASC) Code is 6730: Rotorcraft Servo System. (d) This amendment becomes effective on November 26, 2010. Note 2: The subject of this AD is addressed in European Aviation Safety Agency (France) Emergency AD No. 2007-0141-E, dated May 21, 2007.