2005-20-25: Avionics bus circuit breaker switches

2005-20-25 The Cessna Aircraft Company: Amendment 39-14321; Docket No. FAA-2005-21173; Directorate Identifier 2005-CE-22-AD. When Does This AD Become Effective? (a) This AD becomes effective on November 9, 2005. What Other ADs Are Affected By This Action? (b) None. What Airplanes Are Affected by This AD? (c) This AD affects the following airplane models and serial numbers that are: (1) Equipped with an avionics bus circuit breaker switch, part number (P/N) CM3589-50, 593-250-101, 593-250-102, W31-X2M5A-50, or W31-X1000-50; and (2) certificated in any category: Model Serial numbers 401 655 and 401 0001 through 401 0322. 401A 655 and 401A0001 through 401A0132. 401B 401B0001 through 401B0221. 402 402 0001 through 402 0322. 402A 402A0001 through 402A0129. 402B 402B0001 through 402B0122, 402B0201 through 402B0249, 402B0301 through 402B0455, 402B0501 through 402B0640, 402B0801 through 402B0935, 402B1001 through 402B1100, 402B1201 through 402B1250, and 402B1301 through 402B1384. 402C 689, 402C0001 through 402C0125, 402C0201 through 402C0355, 402C0401 through 402C0528, 402C0601 through 402C0653, 402C0801 through 402C0807, and 402C0808 through 402C1020. 404 682, 404 0001 through 404 0136, 404 0201 through 404 0246, 404 0401 through 404 0460, 404 0601 through 404 0695, and 404 0801 through 404 0859. 411 642 and 411 0001 through 411 0250. 411A 411 0251 through 411 0300. 414 667, 414 0001 through 414 0099, 414 0151 through 414 0175, 414 0251 through 414 0280, 414 0351 through 414 0437, 414 0451 through 414 0550, 414 0601 through 414 0655, 414 0801 through 414 0855, and 414 0901 through 414 0965. 414A 414A0001 through 414A0121, 414A0201 through 414A0340, 414A0401 through 414A0535, 414A0601 through 414A0680, 414A0801 through 414A0858, and 414A1001 through 414A1212. 421 693 and 421 0001 through 421 0200. 421A 421A0001 through 421A0158. 421B 421B0001 through 421B0056, 421B0101 through 421B0147, 421B0201 through 421B0275, 421B0301 through 421B0486, 421B0501 through 421B0665, and 421B0801 through 421B0970. 421C 421C0001 through 421C0171, 421C0201 through 421C0350, 421C0401 through 421C0525, 421C0601 through 421C0715, 421C0801 through 421C0910, 421C1001 through 421C1115, 421C1201 through 421C1257, 421C1401 through 421C1413, and 421C1801 through 421C1807. 425 425 0001 through 425 0236. 441 698 and 441 0001 through 441 0362. What is the Unsafe Condition Presented in This AD? (d) This AD is the result of reports of smoke and a burning smell in the cockpit. The actions specified in this AD are intended to prevent failure of the avionics bus circuit breaker switch, which could result in smoke and a burning smell in the cockpit. This failure could lead to reduced ability to control the airplane. What Must I do to Address This Problem? (e) To address this problem, you must do the following: Actions Compliance Procedures (1) Inspect the avionics bus circuit breaker switch to determine the part number (P/N) and date code. (i) If the P/N is CM3589 50, 593 250 101, 593 250 102, W31 X2M5A 50, or W31 X1000 50; and (ii) The date code is 0434 or later; then (iii) No further action is required. Within the next 200 hours time-in-service (TIS), the next 12 months, or at the next scheduled inspection, after November 9, 2005 (the effective date of this AD), whichever occurs first. For Models 425 and 441 airplanes, follow the procedures in Cessna Conquest Service Bulletin CQB05 2, dated February 21, 2005, and the applicable maintenance manual. For all other affected airplane models, follow the procedures in Cessna Multi-engine Service Bulletin MEB05 1 dated February 21, 2005, and the applicable maintenance manual. (2) If the P/N is CM3589 50, 593 250 101, 593 250 102, W31 X2M5A 50, or W31 X1000 50 and there is no date code, replace the avionics bus circuit breaker switch with a P/N CM3589 50 that has a date code of 0434 or later. Before further flight after the inspection required in paragraph (e)(1) of this AD. For Models 425 and 441 airplanes, follow the procedures in Cessna Conquest Service Bulletin CQB05 2, dated February 21, 2005, and the applicable maintenance man- ual. For all other affected airplane models, follow the procedures in Cessna Multi-engine Service Bulletin MEB05 1, dated February 21, 2005, and the applicable maintenance manual. (3) If the P/N is CM3589 50, 593 250 101, 593 250 102, W31 X2M5A 50, or W31 X1000 50, or W31 X1000 50 and the date code is earlier than 0434, the part has a safe life limit of 1,000 hours TIS and must be replaced within the 1,000-hour time limit with a P/N CM3589 50 that has a date code of 0434 or later. Within the 1,000-hour TIS safe life limit For Models 425 and441 airplanes, follow the procedures in Cessna Conquest Service Bulletin CQB05 2, dated February 21, 2005, and the applicable maintenance manual. For all other affected airplane models, follow the procedures in Cessna Multi-engine Service Bulletin MEB05 1, dated February 21, 2005, and the applicable maintenance manual. (4) Do not install a P/N CM3589 50, 593 250 101, 593 250 102, W31 X2M5A 50, or W31 X1000 50 that does not have a date code or has a date code earlier than 0434. As of November 9, 2005 (the effective date of this AD). Not applicable. 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. Forinformation on any already approved alternative methods of compliance, contact Gerald Pilj, Aerospace Engineer, FAA Wichita ACO, 1801 Airport Road, Mid- Continent Airport, Wichita, Kansas 67209; telephone: (316) 946-4151; facsimile: (316) 946-4107. Does This AD Incorporate Any Material by Reference? (g) You must do the actions required by this AD following the instructions in Cessna Conquest Service Bulletin CQB05-2, dated February 21, 2005, and Cessna Multi-engine Service Bulletin MEB05-1, dated February 21, 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 The Cessna Aircraft Company, Citation Marketing Division, Product Support P.O. Box 7706, Wichita, Kansas 67277; telephone: (316) 517-5800; facsimile: (316) 942-9006. 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-2005-21173; Directorate Identifier 2005-CE-22-AD.