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2004-22-28 Raytheon Aircraft Company: Amendment 39-13856; Docket No. 2004-CE-11-AD.
When Does This AD Become Effective?
(a) This AD becomes effective on December 27, 2004.
What Other ADs Are Affected by This Action?
(b) None.
What Airplanes Are Affected by This AD?
(c) This AD affects Model B100 airplanes, serial numbers BE-1 through BE-136, that are certificated in any category.
What Is the Unsafe Condition Presented in This AD?
(d) This AD is the result of reports of loose "B" nuts on the engine inlet that may loosen and permit a leak in the engine inlet anti-ice system. The actions specified in this AD are intended to detect and correct loose "B" nuts on the engine inlet, which could result in failure of the engine inlet anti-ice system and consequent ice buildup. This failure and ice buildup could lead to an engine's ingestion of ice with loss of engine power or loss of engine.
What Must I Do To Address This Problem?
(e) To address this problem, you must do the following:
Actions
Compliance
Procedures
(1) Drill a 0.035-inch hole in each of the hot tube "B" nuts (part number (P/N) AN818-6D and AN818-8D).
Within the next 150 hours time-in-service (TIS) or 6 calendar months after December 27, 2004 (the effective date of this AD), whichever occurs first.
Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue.
(2) Tighten the hot lip tube "B" nuts to a specified torque range:
(i) Tighten hot lip tube "B" nuts P/N AN818-6D to a torque range of 75 to 125 inch-pounds.
(ii) Tighten hot lip tube "B" nuts P/N AN818-8D to a torque range of 150 to 250 inch-pounds.
Before further flight after the actions required by paragraph (e)(1) of the AD.
Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue.
(3)Secure the hot lip tube "B" nuts (P/N AN818-6D and AN818-8D) with safety wire.
Before further flight after the actions required by paragraph (e)(2) of this AD.
Follow Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. The applicable airplane maintenance manual also addresses this issue.
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, Wichita Aircraft Certification Office (ACO), FAA. For information on any already approved alternative methods of compliance, contact Jeff Pretz, Aerospace Engineer, Wichita ACO, FAA, 1801 Airport Road, Wichita, Kansas 67209; telephone: (316) 946-4153; facsimile: (316) 946-4407.
Does This AD Incorporate Any Material by Reference?
(g) You must do the actions required by this AD following the instructions in Raytheon Aircraft Mandatory Service Bulletin No. SB 30-3143, dated September 2001. 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. You may get a copy from Raytheon Aircraft Company, 9709 E. Central, Wichita, Kansas 67201-0085; telephone: (800) 429-5372 or (316) 676-3140. You may review copies at FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; or 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.
