2005-22-13: Left and right main landing gear (MLG) assemblies

2005-22-13 Pilatus Aircraft Ltd.: Amendment 39-14357; Docket No. FAA-2005-21835; Directorate Identifier 2005-CE-35-AD. When Does This AD Become Effective? (a) This AD becomes effective on December 19, 2005. What Other ADs Are Affected by This Action? (b) None. What Airplanes Are Affected by This AD? (c) This AD affects Models PC-12 and PC-12/45 airplanes, Manufacturers Serial Numbers (MSN) 101 through 620, that are certificated in any category. What Is the Unsafe Condition Presented in This AD? (d) This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Switzerland. The actions specified in this AD are intended to detect and correct any part number (P/N) 532.10.12.077 or FAA-approved equivalent part number bolts that do not have white primed and painted heads, which could result in corrosion of the bolt and consequent failure of the bolt. This failure of the bolt could lead to main landing gear (MLG) collapse during airplane landing and take-off operations with consequent loss of airplane control. What Must I Do To Address This Problem? (e) To address this problem, you must do the following: Actions Compliance Procedures (1) Inspect the main landing gear (MLG) assemblies, part number (P/N) 532.10.12.049 and P/N 532.10.12.050 or FAA-approved equivalent part number, for any P/N 532.10.12.077 or FAA-approved equivalent part number bolts that do not have white primed and painted heads. Within the next 100 hours time-in-service (TIS) or 90 days after December 19, 2005 (the effective date of this AD), whichever occurs first, unless already done. Follow Pilatus PC12 Service Bulletin No. 32 018, dated May 2, 2005. (2) Replace any P/N 532.10.12.077 bolts that do not have white primed and painted heads found as a result of the inspection required by paragraph (e)(1) of this AD.Replace with new bolts (new P/N 532.10.12.077F or FAA-approved equivalent part number) in both MLG assemblies. Before further flight after inspection required by paragraph (e)(1) of this AD. Follow Pilatus PC12 Service Bulletin No. 32 018, dated May 2, 2005. (3) 14 CFR 21.303 allows for replacement parts through parts manufacturer approval (PMA). The phrase "or FAA-approved equivalent part number" in this AD is intended to signify those parts that are PMA parts approved through identicality to the design of the part under the type certificate and replacement parts to correct the unsafe condition under PMA (other than identicality). If parts are installed that are identical to the unsafe parts, then the corrective actions of the AD affect these parts also. In addition, equivalent replacement parts to correct the unsafe condition under PMA (other than identicality) may also be installedprovided they meet current airworthiness standards, which include those actions cited in this AD. Not Applicable Not Applicable. (4) Do not install: (i) Any P/N 532.10.12.077 (or FAA-approved equivalent part number) bolt that does not have a white primed and painted head in any MLG assembly (P/N 532.10.12.049, P/N 532.10.12.050, or FAA-approved equivalent part number); and (ii) Any MLG assembly (P/N 532.10.12.049, P/N 532.10.12.050 or FAA-approved equivalent part number) that does not have P/N 532.10.12.077F (or FAA-approved equivalent part number) bolts with white primed and painted heads. As of December 19, 2005 (the effective date of this AD). Not Applicable. Note: The FAA recommends that you return any removed bolts to Pilatus. May I Request an Alternative Method of Compliance? (f) You may request a different method of compliance or a different compliance time for this AD by following the procedures in 14 CFR 39.19. Unless FAA authorizes otherwise, send your request to your principal inspector. The principal inspector may add comments and will send your request to the Manager, Standards Office, Small Airplane Directorate, FAA. For information on any already approved alternative methods of compliance, contact Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4059; facsimile: (816) 329-4090. Is There Other Information That Relates to This Subject? (g) Swiss AD Number HB-2005-288, dated June 29, 2005, also addresses the subject of this AD. Does This AD Incorporate Any Material by Reference? (h) You must do the actions required by this AD following the instructions in Pilatus PC12 Service Bulletin No. 32-018, dated May 2, 2005. The Director of the Federal Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. To get a copy of this service information, contact Pilatus Aircraft Ltd., Customer Liaison Manager, CH-6371 Stans, Switzerland; telephone: +41 41 619 6208; facsimile: +41 41 619 7311; e-mail: [email protected] or from Pilatus Business Aircraft Ltd., Product Support Department, 11755 Airport Way, Broomfield, Colorado 80021; telephone: (303) 465- 9099; facsimile: (303) 465-6040. 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-2005-21835; Directorate Identifier 2005-CE-35-AD.