2021-22-20: Reciprocating Engine Power Section

1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 2. The FAA amends § 39.13 by adding the following new airworthiness directive: 2021-22-20 Austro Engine GmbH Engines: Amendment 39-21793; Docket No. FAA-2021-0946; Project Identifier MCAI-2021-01020-E. (a) Effective Date This airworthiness directive (AD) is effective November 16, 2021. (b) Affected ADs None. (c) Applicability This AD applies to Austro Engine GmbH E4 and E4P model diesel piston engines equipped with either: (1) A cylinder head having part number (P/N) E4A-12-500-000 (affected cylinder head), or (2) A high-pressure pump (HPP) driving gear, having P/N E4A-30-000-201, with a serial number (S/N) listed in Chapter 1.4, Table 1 of Austro Engine Mandatory Service Bulletin No. MSB-E4-034/3, Revision No. 3, dated September 30, 2021 (MSB-E4-034/3) (affected HPP driving gear). (d) Subject Joint Aircraft System Component (JASC) Code 8520, Reciprocating Engine Power Section. (e) Unsafe Condition This AD was prompted by reports of failure of the HPP driving gear and a subsequent investigation by the manufacturer, which determined that a certain batch of HPP driving gears may have been damaged during assembly. The investigation also determined that affected engines equipped with an affected cylinder head were also subject to premature failure of the HPP driving gear. The FAA is issuing this AD to prevent the failure of the HPP driving gear. The unsafe condition, if not addressed, could result in in-flight engine shut-down, forced landing, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions (1) For engines with an affected cylinder head, before further flight after the effective date of this AD, perform all actions in the Accomplishment/Instructions, paragraph 2.1., of Austro Engine Mandatory Service Bulletin No. MSB-E4-035/1, Revision No. 1, dated September 30, 2021 (MSB-E4-035/1). (2) If, during the performance of the actions required by paragraph (g)(1) of this AD, the HPP driving gear does not pass the inspection, as specified in paragraph 2.1. of Austro Engine MSB-E4-035/1, before further flight, replace the HPP driving gear with a part eligible for installation. (3) For engines equipped with an affected HPP driving gear, within the compliance time specified in Table 1 to paragraph (g)(3) of this AD, as applicable, replace each affected HPP driving gear with a part eligible for installation. ER01NO21.001 (h) Definitions (1) For the purpose of this AD, a part eligible for installation is an HPP driving gear that is not an affected HPP driving gear. (2) For the purpose of this AD, engines in Engine Group 1 are Model E4 engines in configuration "-A" installed on single engine airplanes. (3) For the purpose of this AD, engines in Engine Group 2 are Model E4 engines in configuration "-B" or "-C" and Model E4P engines installed on twin-engine airplanes. (i) Special Flight Permit A special flight permit may be issued in accordance with 14 CFR 21.197 and 21.199 to permit a single ferry flight to a location where the actions required by this AD can be accomplished on a twin-engine airplane that has one or two Model E4 engines in configuration "-B" or "-C", or Model E4P engines, installed. (j) Non-Required Actions The requirements to fill out and send the execution report to Austro Engine, as well as the requirement to contact Austro Engine and provide pictures of the driving gear, as set forth in the Accomplishment/Instructions, paragraph 2.1., of MSB-E4-035/1, are not required by this AD. (k) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ECO Branch, send it to the attention of the person identified in paragraph (l)(1) of this AD. You may email your request to: ANE-AD-AMOC@faa.gov. (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. (l) Related Information (1) For more information about this AD, contact Wego Wang, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7134; fax: (781) 238-7199; email: wego.wang@faa.gov. (2) Refer to European Union Aviation Safety Agency (EASA) AD 2021-0203R1, dated September 24, 2021, for more information. You may examine the EASA AD in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-0946. (m) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Austro Engine Mandatory Service Bulletin (MSB) No. MSB-E4-035/1, Revision No. 1, dated September 30, 2021. (ii) Austro Engine MSB No. MSB-E4-034/3, Revision No. 3, dated September 30, 2021. (3) For Austro Engine service information identified in this AD, you may contact Austro Engine GmbH, Rudolf-Diesel-Strasse 11, 2700 Weiner Neustadt, Austria; phone: +43 2622 23000; website: www.austroengine.at. (4) You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (781) 238-7759. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. Issued on October 27, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021-23842 Filed 10-28-21; 11:15 am]BILLING CODE 4910-13-P