AD 2010-14-21 Airworthiness Directives; Thielert Aircraft Engines GmbH Model TAE 125-01 Reciprocating Engines

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

This AD applies to Thielert Aircraft Engines GmbH model TAE 125-01 reciprocating engines with any of the following part number blow-by oil separators installed: Table 1—Part Numbers of Affected Blow-By Oil Separators       02-7250-18100R1 02-7250-18100R2 02-7250-18100R3 02-7250-18100R4 02-7250-18300R1 02-7250-18300R2 02-7250-18300R3 02-7250-18300R4 02-7250-18300R5 These engines are installed in, but not limited to, Diamond Aircraft Industries Model DA 40, Piper PA-28-161 (Supplemental Type Certificate (STC) No. SA03303AT), and Cessna 172 (STC No. SA01303WI) airplanes. Reason (d) Service has shown that the small outlet of the blow-by oil separators, part number 02-7250-18100R1; 02-7250-18100R2; 02-7250-18100R3; 02-7250-18100R4; 02-7250-18300R1; 02-7250-18300R2; 02-7250-18300R3; 02-7250-18300R4; or 02-7250-18300R5, may cause a blow-by gas pressure increase inside the crankcase of the engine in excess of the oil seal design pressure limits. Leaking engine oil may adversely affect the gearbox clutch or the engine lubrication system. This condition, if not corrected, could lead to in-flight cases of engine power loss or ultimately, shutdown. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. We are issuing this AD to prevent loss of engine power or uncommanded engine shutdown during flight due to excessive crankcase blow-by gas pressure.

Unless already done, do the following actions: (1) Remove the blow-by oil separators listed by part number in Table 1 of this AD within the next 110 flight hours after the effective date of this AD. (2) Use the Measures section of Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 125-0019, Revision 1, dated March 5, 2009, to do the removal from service. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) The Manager, Engine 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 European Aviation Safety Agency AD 2010-0020, dated February 8, 2010, for related information. (i) Contact Tara Chaidez, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: tara.chaidez@faa.gov; telephone (781) 238-7773; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (j) You must use Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 125-0019, Revision 1, dated March 5, 2009, 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 Thielert Aircraft Engines GmbH, Platanenstrasse 14 D-09350, Lichtenstein, Germany, telephone: +49-37204-696-0; fax: +49-37204-696- 55; e-mail: info@centurion-engines.com. (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 July 1, 2010. Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010-16618 Filed 7-12-10; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do the following actions: (1) Remove the blow-by oil separators listed by part number in Table 1 of this AD within the next 110 flight hours after the effective date of this AD. (2) Use the Measures section of Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 125-0019, Revision 1, dated March 5, 2009, to do the removal from service. FAA AD Differences (f) None. Alternative Methods of Compliance (AMOCs) (g) The Manager, Engine 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 European Aviation Safety Agency AD 2010-0020, dated February 8, 2010, for related information. (i) Contact Tara Chaidez, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: tara.chaidez@faa.gov; telephone (781) 238-7773; fax (781) 238-7199, for more information about this AD. Material Incorporated by Reference (j) You must use Thielert Aircraft Engines GmbH Service Bulletin No. TM TAE 125-0019, Revision 1, dated March 5, 2009, 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 Thielert Aircraft Engines GmbH, Platanenstrasse 14 D-09350, Lichtenstein, Germany, telephone: +49-37204-696-0; fax: +49-37204-696- 55; e-mail: info@centurion-engines.com. (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 July 1, 2010. Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 2010-16618 Filed 7-12-10; 8:45 am] BILLING CODE 4910-13-P