The U.S. aircraft register, updated daily
FAA orders · airworthiness directive · current

2012-23-12: Fuel control units (FCUs)

FAA order 2012-23-12 is an airworthiness directive in force since January 7, 2013. The FAA's subject line: Fuel control units (FCUs). It names the Turbomeca (Safran) ARRIEL 1E2, Turbomeca (Safran) ARRIEL 1S, Turbomeca (Safran) ARRIEL 1S1 engines: about 106 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product
Engine
Makes
Turbomeca S.A.
Models
Arriel 1E2, Arriel 1S, Arriel 1S1
Engine series
Turbomeca (Safran) ARRIEL 1E2 101 aircraft
Turbomeca (Safran) ARRIEL 1S 1 aircraft
Turbomeca (Safran) ARRIEL 1S1 4 aircraft

Dates and paperwork

In force since
January 7, 2013
Published
December 3, 2012 (signed November 14, 2012)
Docket
FAA-2008-0681
Replaces
2009-03-04
Status
Current
The FAA's document
Read the order on the FAA's site

The FAA's summary their words, unchanged

We are superseding an existing airworthiness directive (AD) for all Turbomeca S.A. Arriel 1E2, 1S, and 1S1 turboshaft engines. That AD currently requires a one-time inspection and torque check of the 3- way union plug installed on all fuel control units (FCUs). This new AD requires the same actions. This AD also requires reduction of the applicability to certain FCUs and references an updated service bulletin containing additional detailed information to identify the non-compliant ``red disk.'' This AD also requires replacement of the plug before further flight if it is found to be non-compliant, and prohibits installation of FCUs that have not passed the 3-way union plug inspection and torque check. This AD was prompted by Turbomeca S.A. informing us that FCUs manufactured, repaired, or overhauled after March 31, 2008, do not require inspection. We are issuing this AD to prevent fuel leaks, which could result in a fire and damage to the helicopter.

The order itself the regulatory text, as published

Show the full text (4,819 characters)
Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by removing airworthiness directive (AD) 2009-03-04, Amendment 39-15805 (74 FR 7796, February 20, 2009), and adding the following new AD: 2012-23-12 Turbomeca S.A.: Amendment 39-17268; Docket No. FAA-2008- 0681; Directorate Identifier 2008-NE-13-AD. (a) Effective Date This airworthiness directive (AD) is effective January 7, 2013. (b) Affected ADs This AD supersedes AD 2009-03-04, Amendment 39-15805 (74 FR 7796, February 20, 2009. (c) Applicability This AD applies to Turbomeca S.A. models Arriel 1E2, 1S, and 1S1 turboshaft engines with FCUs manufactured, repaired, or overhauled onor before March 31, 2008. (d) Unsafe Condition Turbomeca S.A. informed the European Aviation Safety Agency of a case of a ``red disk'' plug, adapted for bench testing, which was installed on the FCU on an engine and released for service operation. An engine experienced an in-service high pressure leak event (at the fuel pump outlet) due to cracking of this ``red disk'' plug. This leak could lead to in-flight flame-out and/or possibly a fire. This AD was prompted by Turbomeca S.A. informing us that FCUs manufactured, repaired, or overhauled after March 31, 2008, do not require inspection. We are issuing this AD to prevent fuel leaks, which could result in a fire and damage to the helicopter. (e) Compliance Comply with this AD within the compliance times specified, unless already done. Within 100 operating hours from the effective date of this AD, perform a one-time inspection of the plug installed in the FCU 3-way union, part number 9 932 30 706 0. (1) If the FCU 3-way union plug is unpainted, verify the plug is torqued to between 1.3 and 1.5 daN.m, in accordance with Turbomeca S.A. Mandatory Service Bulletin (MSB) No. 292 73 0817, Version D, dated February 29, 2012, before further flight. (2) If the FCU 3-way union plug has any red paint on it, replace it with a serviceable plug and torque the plug to between 1.3 and 1.5 daN.m, in accordance with Turbomeca S.A. MSB No. 292 73 0817, Version D, dated February 29, 2012, before further flight. (f) Installation Prohibition After the effective date of this AD, do not install any FCU manufactured, repaired, or overhauled on or before March 31, 2008, onto any Turbomeca S.A. model Arriel 1E2, 1S, and 1S1 turboshaft engine, unless the FCU 3-way union plug has passed the one-time inspection and torque check required by this AD. (g) Credit for Previous Actions If you performed the inspections and corrective actions required by this AD using the original issue or any version upto and including Version D of Turbomeca S.A. MSB No. 292 73 0817 before the effective date of this AD, you have met the requirements of this AD. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (i) Related Information (1) For more information about this AD, contact Rose Len, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7772; fax: 781-238-7199; email: rose.len@faa.gov. (2) Refer to European Aviation Safety Agency Airworthiness Directive 2012-0063, dated April 17, 2012, for related information. (j) 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) Turbomeca S.A. Mandatory Service Bulletin No. 292 73 0817, Version D, dated February 29, 2012. (ii) Reserved. (3) For service information identified in this AD, contact Turbomeca S.A., 40220 Tarnos, France; phone: 33 (0)5 59 74 40 00; telex: 570 042; fax: 33 (0)5 59 74 45 15. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (5) You may view this service information 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.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2012-23-12.json · aircraft systems.