AD 2009-13-09 Airworthiness Directives; Microturbo SA Saphir 2 Model 016 Auxiliary Power Units

This AD applies to Microturbo SA Saphir 2 model 016 auxiliary power units (APUs) on which the exhaust thermal insulation has been replaced since January 1, 1995. These APUs are installed on, but not limited to, Dassault Falcon 20 airplanes. Reason (d) European Aviation Safety Agency (EASA) AD No. 2009-0100, dated May 4, 2009, states: Due to a lapse in manufacturing quality control, the exhaust thermal insulation of certain Microturbo SA Saphir 2 model 016 APUs may not meet the approved design standard, and may fail in service. The affected part numbers are 016-33-01 (Inner Thermal Insulation), 016-33-02 (Outer Thermal Insulation), and 016-33-03 (EGT Sensor Thermal Insulation). This condition, if not corrected, could result in rapid deterioration and physical breakdown of the exhaust thermal insulation, leading to loss of insulation efficiency and ultimately exposure of the hot APU exhaust section and risk of fire. We are issuing this AD to prevent rapid deterioration and physical breakdown of the exhaust thermal insulation, leading to loss of insulation efficiency and ultimately exposure of the hot APU exhaust section and risk of fire.

Unless already done, do the following actions. Initial and Repetitive Inspections (1) Within 10 APU operating hours from the effective date of this AD, visually inspect the exhaust thermal insulation for signs of deterioration. Repeat the inspection at intervals not exceeding 10 operating APU hours. (2) If deterioration is detected, replace the exhaust thermal insulation before operating the APU again. Use paragraphs 2.A. through 2.C.(4)(b) of Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the replacement. Mandatory Terminating Action (3) As mandatory terminating action to the repetitive visual inspections required by this AD, replace the exhaust thermal insulation within 50 APU operating hours from the effective date of this AD. Use paragraphs 2.A. through 2.C.(4)(b) of Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the replacement. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) The Manager, Boston Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (h) Refer to MCAI EASA Airworthiness Directive 2009-0100, dated May 4, 2009, for related information. (i) Contact Michael Schwetz, Aerospace Engineer, Boston Aircraft Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: michaelschwetz@faa.gov; telephone (781) 238-7761; fax (781) 238-7170, for more information about this AD. Material Incorporated by Reference (j) You must use Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Microturbo SA, Technical Publications Department, 8, Chemin du pont de Rupe, BP 62089, 31019 Toulouse Cedex 2, France; telephone (33) (0)5 61 37 55 00; fax (33) (0)5 61 70 74 45. (3) You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA; 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/cfr/ibr-locations.html . Issued in Burlington, Massachusetts, on June 17, 2009. Carlos Pestana, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-14809 Filed 6-26-09; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do the following actions. Initial and Repetitive Inspections (1) Within 10 APU operating hours from the effective date of this AD, visually inspect the exhaust thermal insulation for signs of deterioration. Repeat the inspection at intervals not exceeding 10 operating APU hours. (2) If deterioration is detected, replace the exhaust thermal insulation before operating the APU again. Use paragraphs 2.A. through 2.C.(4)(b) of Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the replacement. Mandatory Terminating Action (3) As mandatory terminating action to the repetitive visual inspections required by this AD, replace the exhaust thermal insulation within 50 APU operating hours from the effective date of this AD. Use paragraphs 2.A. through 2.C.(4)(b) of Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the replacement. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) The Manager, Boston Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Related Information (h) Refer to MCAI EASA Airworthiness Directive 2009-0100, dated May 4, 2009, for related information. (i) Contact Michael Schwetz, Aerospace Engineer, Boston Aircraft Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: michaelschwetz@faa.gov; telephone (781) 238-7761; fax (781) 238-7170, for more information about this AD. Material Incorporated by Reference (j) You must use Microturbo SA Alert Service Bulletin No. 49-11A76, Revision 1, dated September 6, 2007, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Microturbo SA, Technical Publications Department, 8, Chemin du pont de Rupe, BP 62089, 31019 Toulouse Cedex 2, France; telephone (33) (0)5 61 37 55 00; fax (33) (0)5 61 70 74 45. (3) You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA; 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/cfr/ibr-locations.html . Issued in Burlington, Massachusetts, on June 17, 2009. Carlos Pestana, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E9-14809 Filed 6-26-09; 8:45 am] BILLING CODE 4910-13-P