2010-23-09: High pressure (HP) fuel pumps

2010-23-09 Austro Engine GmbH: Amendment 39-16498; Docket No. FAA- 2010-1055; Directorate Identifier 2010-NE-35-AD. Effective Date (a) This airworthiness directive (AD) becomes effective November 22, 2010. Affected ADs (b) None. Applicability (c) This AD applies to Austro Engine GmbH model E4 diesel piston engines. These engines are installed on, but not limited to, Diamond Aircraft Industries DA 40 NG and DA 42 NG airplanes. Reason (d) Several power loss events have been reported, due to rail pressure control failures. Analyses have shown that high pressure (HP) fuel pumps failed as a result of pressure oscillations in the fuel supply line. We are issuing this AD to prevent engine power loss or in-flight shutdown, which could result in loss of control of the airplane. Actions and Compliance (e) Unless already done, do the following actions. (1) Inspect the fuel pressure supply for excessive oscillations using the inspection schedule in Table 1 of this AD. Table 1--Inspection Schedule Accumulated Time-Since-New: Compliance Time: 45 flight hours or more, on the effective date of this AD. Within 10 flight hours after the effective date of this AD. Fewer than 45 flight hours, on the effective date of this AD. At the next scheduled 50 flight hour inspection. Repetitive inspections. At each 50 flight-hour scheduled inspection. (2) Replace the high-pressure fuel pump before further flight with a serviceable high-pressure fuel pump if the oscillations exceed 300mV (750hPa). (3) Use Austro Engine GmbH Work Instruction No. WI-MSB-E4-009, dated October 7, 2010, to do the inspections. 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 MCAI European Aviation Safety Agency Airworthiness Directive 2010-0206-E, dated October 8, 2010, and Austro Engine GmbH Mandatory Service Bulletin No. MSB-E4-009, dated October 7, 2010, for related information. Contact Austro Engine GmbH, Rudolf-Diesel- Strasse 11, A-2700 Weiner Neustadt, Austria, telephone: +43 2622 23000; fax: +43 2622 23000-2711, or go to: http:// www.austroengine.at, for a copy of this service bulletin. (i) Contact James Lawrence, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: [email protected]; telephone (781) 238-7176; fax (781) 238- 7199, for more information about this AD. Material Incorporated by Reference (j) You must use Austro Engine GmbH Work Instruction No. WI-MSB- E4-009, dated October 7, 2010, to do the inspections required by this AD. (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 Austro Engine GmbH, Rudolf-Diesel-Strasse 11, A-2700 Weiner Neustadt, Austria, telephone: +43 2622 23000; fax: +43 2622 23000- 2711, or go to: http://www.austroengine.at. (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.