Airworthiness directives › 2004-20-08
AD 2004-20-08 Airworthiness Directives; MD Helicopters, Inc. (MDHI) Model 500N and 600N Helicopters
Applicability*9
The following model and serial number (S/N) helicopters, with forward thruster cable (cable) assembly and center cable assembly part number (P/N), installed, certificated in any category: Model S/N Forward cable assembly P/N Center cable assembly P/N 500N With a prefix of “LN” and 001 through 099 500N7201-55 500N7201-57 600N With a prefix of “RN” and 003 through 068 500N7201-55 500N7201-59
Compliance
Required as indicated, unless accomplished previously. To detect a corrosion-pitted or cracked forward or center cable assembly connector (connector) and to prevent failure of the cable assembly and subsequent loss of control of the helicopter, accomplish the following: (a) Within the next 10 hours time-in-service or 30 days, whichever comes first, using a bright light and a 10X or higher magnifying glass, inspect each connector for corrosion pitting or cracking by following the Accomplishment Instructions, paragraph 2., of MD Helicopter, Inc. Service Bulletin SB500N-027, SB600N-042, dated May 3, 2004. If you find corrosion pitting or cracking, replace the cable assembly with an airworthy cable assembly before further flight. Replacing the cable assembly with an airworthy cable assembly is terminating action for the requirements 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 Los Angeles Aircraft Certification Office, FAA, for information about previously approved alternative methods of compliance. (c) Do the inspection by following MD Helicopters, Inc. Service Bulletin SB500N-027, SB600N-042, dated May 3, 2004. The Director of the Federal Register approved this incorporation by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from MD Helicopters Inc., Attn: Customer Support Division, 4555 E. McDowell Rd., Mail Stop M615-GO48, Mesa, Arizona 85215-9734, telephone 1-800-388-3378, fax 480-891-6782, or on the Web at http://www.mdhelicopters.com. Copies may be inspected at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. (d) This amendment becomes effective on October 21, 2004. Issued in Fort Worth, Texas, on September 22, 2004. David A. Downey, Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 04-22264 Filed 10-5-04; 8:45 am] BILLING CODE 4910-13-P
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