Document ID: chunk:federal_register_of_legislation:F2007L03983:body:0:p1
Version: federal_register_of_legislation:F2007L03983
Segment Type: other
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Character Range: 0–5733

AIRWORTHINESS DIRECTIVE
On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/CF6/58 and issues the following AD under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

General Electric Turbine Engines - CF6 Series
AD/CF6/58 Amdt 1  Electronic Control Unit Software  11/2007

Applicability:  CF6-80E1A1, CF6-80E1A2, CF6-80E1A3, CF6-80E1A4 and CF6-80E1A4/B turbofan engines.
                Note 1:  These engines are known to be installed on, but not limited to, Airbus A330 series aeroplanes.
Requirement:       1. Unless already accomplished, remove the following software versions from the engine electrical control unit (ECU):
                Table 1
                Software Version                                                                                                                                                                                                           ECU Part Number
                     E.1.D                                                                                                                                                                                                                 1799M99P01
                    E.1.F                                                                                                                                                                                                                  1799M99P03
                    E.1.G                                                                                                                                                                                                                  1799M99P04
                    E.1.H                                                                                                                                                                                                                  1799M99P05
                    E.1.I                                                                                                                                                                                                                  1799M99P06, 1799M99P07, 1851M74P01, 1851M80P01
                    E.1.J                                                                                                                                                                                                                  1799M99P08, 1799M99P09, 1851M74P02, 1851M80P02
                    E.1.K                                                                                                                                                                                                                  1799M99P10, 1851M74P03, 1851M80P03, 1960M84P01
                    E.1.L                                                                                                                                                                                                                  1799M99P11, 1851M74P04, 1851M80P04, 1960M84P02
                    E.1.M                                                                                                                                                                                                                  1799M99P12, 1851M74P05, 1851M80P05, 1960M84P03
                    E.1.N                                                                                                                                                                                                                  1799M99P13, 1851M74P06, 1851M80P06, 1960M84P04, 2043M29P01, 2043M29P02
                   2. Until 31 January 2008, once an ECU containing a software version not listed in Table 1 is installed on an engine, that ECU can be replaced with an ECU containing a previous version of software listed in Table 1.
                   3. Once the software version listed in Table 1 has been removed and new FAA-approved software version is installed in an ECU, reverting to those older software versions in that ECU is prohibited.
                   4. Use of an ECU with a software version listed in Table 1 is prohibited.

             Note 2:  Information on removing ECU software and installing new software, which provides increased margin to flameout, can be found in GE Service Bulletin
             CF6-80E1 S/B 73-0091, Revision 1, dated 26 June 2007.
             Note 3:  FAA AD 2007-17-01 Amdt 39-15159 refers.
Compliance:  For Requirement 1 - Before 31 January 2008.
             For Requirements 2 and 3 - As of the effective date of this Amendment.
             For Requirement 4 - After 31 January 2008.
             This Amendment becomes effective on 25 October 2007.
Background:  The original issue of this Directive required removing ECU software version E.1.M. or earlier installed software and installing improved software for the ECU.
             This Amendment is complementary to AD/A330/57 Amdt 2 and replaces the original issue of this Directive.  This Amendment requires removing software version E.1.N or earlier from the engine ECU.  Engines with the new version software will have increased margin to