Document ID: chunk:federal_register_of_legislation:F2014L00527:body:0:p3
Version: federal_register_of_legislation:F2014L00527
Segment Type: other
Provision Reference: 
Character Range: 5673–8665

service bulletin specifies installation of CMC software version 685-2270-009, installation of CMC software version
            685-2270-010 or 685-2270-011 is also acceptable for compliance with this Requirement.
      4. For aeroplanes on which a TRAS lock is installed on the thrust reversers - carry out a functional test of the TRAS lock per the Accomplishment Instructions of Boeing ASB 747-78A2166, Revision 2.
      5. If the Requirement 4 functional test cannot be successfully performed, repair per the Accomplishment Instructions of Boeing ASB 747-78A2166, Revision 2, and repeat the test until it is successful.
      6. If, prior to accomplishment of Boeing SB 747-78-2151, or later revision, on any aeroplane, it becomes necessary to install a thrust reverser with the TRAS lock installed, dispatch of the aeroplane is allowed per the conditions and limitations specified in the 747-400 Master Minimum Equipment List (MMEL), provided that the thrust reverser assembly that has the TRAS lock installed is deactivated per the 747-400 Dispatch Deviations Guide, Boeing Document D6U10151, dated 28 June 2002.  Installation of a thrust reverser without a TRAS lock installed and reactivation of the thrust reverser must be accomplished within the time constraints specified in the MMEL.
      7. If, after accomplishment of Boeing SB 747-78-2151, or later revision, on any aeroplane, it becomes necessary to install a thrust reverser assembly that does not have the TRAS lock installed, dispatch of the aeroplane is allowed per the conditions and limitations specified in the Boeing Model 747-400 MMEL, provided that the thrust reverser assembly that does not have the TRAS lock installed is deactivated per the 747-400 Dispatch Deviations Guide, Boeing Document D6U10151, dated 28 June 2002.  Installation of a thrust reverser with the TRAS lock installed and reactivation of the thrust reverser must be accomplished within the time constraints specified in the MMEL.
   Note 4:  FAA AD 2003-16-16 Amdt 39-13269 refers.

   Note 5:  Later revisions of Service Bulletins contained within this AD that are approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2003-16-16 are considered acceptable for compliance with the equivalent requirements of this AD.  All other requirements of the AD not specifically referenced in an AMOC remain fully applicable and must be complied with.

Compliance:  For Requirement 1.a. - Within 650 hours time-in-service (TIS) from the previous CDU cone brake functional test carried out in accordance with  AD/B747/298 Amdt 1 Requirement 1.a; and thereafter repeat the test at intervals not to exceed 650 hours TIS.
             For Requirement 1.b. - Within 1000 hours time-in-service (TIS) from the previous CDU cone brake functional test carried out in accordance with AD/B747/298 Amdt 1 Requirement 1.b; and thereafter repeat the test at intervals not to exceed 1000 hours TIS.