AD 2011-03-16 Airworthiness Directives; The Cessna Aircraft Company Model 750 Airplanes

Makes named: cessna. Models named: 750. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to The Cessna Aircraft Company Model 750 airplanes, certificated in any category, having serial numbers -0222, and -0225 and subsequent.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection (g) For airplanes having serial numbers -0222, -0225 through -0293 inclusive, -0295, -0296, and -0298: Within 6 months or 600 flight hours after the effective date of this AD, whichever occurs later, inspect to determine the serial number of the auxiliary power unit (APU) generator and the left and right engine 400 amp DC generators, in accordance with the Accomplishment Instructions of Cessna Service Letter SL750-24-08, dated August 13, 2009. For airplanes that have one or more generators having a serial number 060 through 297 inclusive without suffix “C,” before further flight, replace the affected generator(s) with a new or serviceable generator, in accordance with the Accomplishment Instructions of Cessna Service Letter SL750-24-08, dated August 13, 2009. Revision of the Airplane Flight Manual (AFM) (h) For airplanes having serial numbers -0222, and -0225 and subsequent: Within 30 days after the effective date of this AD, revise Section II, Operating Limitations, Generator Limitations, page 2-12, of the applicable airplane flight manual (AFM) to include the information in the applicable Cessna temporary change (TC) required by paragraph (h)(1), (h)(2), or (h)(3) of this AD. These TCs introduce procedures for resetting the APU generator. Operate the airplane according to the limitations and procedures in the TCs. (1) For Model 750 Citation X airplanes (750-0173 and on and airplanes incorporating Cessna Service Bulletin SB750-71-10): Insert Cessna TC 75FMA TC-R01-46, dated April 23, 2009. (2) For Model 750 Citation X airplanes (750-0173 and on and airplanes incorporating Cessna Service Bulletin SB750-71-10): Insert Cessna TC 75EUA TC-R01-35, dated May 8, 2009. (3) For Model 750 Citation X airplanes (750-0173 and on and airplanes incorporating Cessna Service Bulletin SB750-71-10): Insert Cessna TC 75EUMA TC-R01-35, dated May 8, 2009. Note 1: The AFM revisions required by paragraph (h) of this AD may be done by inserting copies of Cessna TCs 75FMA TC-R01-46, dated April 23, 2009; 75EUA TC-R01-35, dated May 8, 2009; or 75EUMA TC-R01-35, dated May 8, 2009; into the applicable AFM. When these TCs have been included in general revisions of the applicable AFM, the general revisions may be inserted into the applicable AFM, provided the relevant information in the general revision is identical to that in the applicable TC. Parts Installation (i) As of the effective date of this AD, no person may install any Pacific Scientific generator having part number 92841-1 (9914752-1) that has serial numbers 060 through 297 without the suffix “C” on any airplane. Alternative Methods of Compliance (AMOCs) (j)(1) The Manager, Wichita Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Raymond Johnston, Aerospace Engineer, Electrical Systems and Avionics, ACE-119W, FAA, Wichita Aircraft Certification Office (ACO), 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; telephone (316) 946-4197; fax (316) 946-4107. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. Related Information (k) For more information about this AD, contact Raymond Johnston, Aerospace Engineer, Electrical Systems and Avionics, ACE-119W, FAA, Wichita Aircraft Certification Office (ACO), 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas 67209; phone: 316-946-4197; fax: 316-946-4107; e-mail: Raymond.Johnston@faa.gov. Material Incorporated by Reference (l) You must use the service information specified in table 1 of this AD to do the actions required by this AD, unless the AD specifies otherwise. Table 1—All Material Incorporated by Reference Document Date Cessna Temporary Change (TC) 75FMA TC-R01-46 to the Section II, Operating Limitations, Generator Limitations, page 2-12 April 23, 2009. Cessna TC 75EUA TC-R01-35 to the Section II, Operating Limitations, Generator Limitations, page 2-12 May 8, 2009. Cessna TC 75EUMA TC-R01-35 to the Section II, Operating Limitations, Generator Limitations, page 2-12 May 8, 2009. Cessna Service Letter SL750-24-08 August 13, 2009. (1) The Director of the Federal Register approved the incorporation by reference of the service information specified in table 1 of this AD under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Cessna Aircraft Co., P.O. Box 7706, Wichita, Kansas 67277; telephone 316-517-6215; fax 316-517-5802; e-mail citationpubs@cessna.textron.com; Internet https://www.cessnasupport.com/newlogin.html. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221. (4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at an NARA facility, call 202-741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Issued in Renton, Washington, on January 28, 2011. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011-2516 Filed 2-14-11; 8:45 am] BILLING CODE 4910-13-P

This AD results from a report of a direct current (DC) generator overvoltage event which caused smoke in the cockpit and damage to numerous avionics and electrical components. The Federal Aviation Administration is issuing this AD to detect and correct an overvoltage condition on the DC electrical busses caused by exciter stator winding failures, and subsequent failure of the generator control unit overvoltage protection circuitry, which could result in damage to critical electrical and avionics components.