AD 2006-13-11 Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 Airplanes

Makes named: pilatus. Read the applicability below — it usually turns on serial or part numbers too.

This AD affects the following Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 airplanes and serial numbers that are certificated in any category: (1) Group 1 (maintains the actions from AD 2002-21-08): All manufacturer serial numbers (MSN) up to and including 939. (2) Group 2: MSN 2001 through 2092. Note: These airplanes are also identified as Fairchild Republic Company PC-6 airplanes, Fairchild Heli Porter PC-6 airplanes, or Fairchild-Hiller Corporation PC-6 airplanes.

To address this problem, you must do the following:   Actions Compliance Procedures (1) Inspect the aileron assembly for proper configuration (i) For Group 1 Airplanes: Within the next 30 days after December 6, 2002 (the effective date of AD 2002-21-08), unless already done (ii) For Group 2 Airplanes: Within the next 30 days after August 7, 2006 (the effective date of this AD), unless already done. Follow Pilatus Service Bulletin No. 62B, dated May 1967, as specified in Pilatus PC-6 Service Bulletin No. 57-001, dated December 20, 2001. (2) If the aileron assembly configuration incorporates aileron part number (P/N) 6106.10.xxx or P/N 6106.0010.xxx, modify the assembly following Pilatus Service Bulletin No. 62B, dated May 1967, and install a placard For All Airplanes: Before further flight after the inspection required in paragraph (e)(1) of this AD, unless already done Follow Pilatus Service Bulletin No. 62B, dated May 1967, as specified in Pilatus PC-6 Service Bulletin No. 57-001, dated December 20, 2001. (3) If the aileron assembly configuration differs from that specified in Pilatus Service Bulletin No. 62B, dated May 1967, or if the part numbers are missing and cannot be verified: For All Airplanes: Before further flight after the inspection required in paragraph (e)(1) of this AD, unless already done Follow Pilatus PC-6 Service Bulletin No. 57-001, dated December 20, 2001. (i) Obtain a repair scheme from the manufacturer through the FAA at the address specified in paragraph (f) of this AD; and (ii) Incorporate this repair scheme. (4) Do not install any aileron assembly unless the inspection, modification, placard, and repair requirements (as applicable) of paragraphs (e)(1), (e)(2), (e)(3), (e)(3)(i), and (e)(3)(ii) of this AD are done (i) For Group 1 Airplanes: As of December 6, 2002 (the effective date of AD 2002-21-08) (ii) For Group 2 Airplanes: As of August 7, 2006 (the effective date of this AD). Follow Pilatus PC-6 Service Bulletin No. 57-001, dated December 20, 2001. Alternative Methods of Compliance (AMOCs) (f) The Manager, Standards Office, ATTN: Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; facsimile: (816) 329-4090, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. (g) AMOCs approved for AD 2002-21-08 are approved for this AD. Related Information (h) Swiss Airworthiness Directive Number HB 2005-289, effective date August 23, 2005, also addresses the subject of this AD. Material Incorporated by Reference (i) You must do the actions required by this AD following the instructions in Pilatus Service Bulletin No. 62B, dated May 1967, and Pilatus Service Bulletin No. 57-001, dated December 20, 2001. (1) As of December 6, 2002 (67 FR 64520, October 21, 2002), the Director of the Federal Register previously approved the incorporation by reference of Pilatus Service Bulletin No. 62B, dated May 1967, and Pilatus Service Bulletin No. 57-001, dated December 20, 2001, in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. (2) To get a copy of this service information, contact Pilatus Aircraft Ltd., Customer Liaison Manager, CH-6371 Stans, Switzerland; telephone: +41 41 619 63 19; facsimile: +41 41 619 6224. To review copies of this service information, go to the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html or call (202) 741-6030. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, Washington, DC 20590-001 or on the Internet at http://dms.dot.gov . The docket number is FAA-2006-24090; Directorate Identifier 2006-CE-16-AD. Issued in Kansas City, Missouri, on June 13, 2006. James E. Jackson, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 06-5587 Filed 6-21-06; 8:45 am] BILLING CODE 4910-13-P

This AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland that requires the actions of AD 2002-21-08 for the added MSN 2001 through 2092 for all the models of the PC-6 airplanes listed in the type certificate data sheet of Type Certificate (TC) No. 7A15. We are issuing this AD to correct improper aileron assembly configuration, which could result in failure of the aileron mass balance weight. Such failure could lead to loss of control of the airplane.