Document ID: chunk:federal_register_of_legislation:F2014L00527:body:0:p2
Version: federal_register_of_legislation:F2014L00527
Segment Type: other
Provision Reference: 
Character Range: 2783–5969

Requirement 2 (paragraph (b)(1) of FAA AD 94-15-05).

      2. If any Requirement 1.a. or 1.b. functional test cannot be successfully performed as specified in the referenced service bulletin or if any discrepancy is detected during any functional test either:
         a. Repair the CDU cone brake in accordance with Boeing ASB 747-78A2166, Revision 2; or Boeing SB 747-78A2113, Revision 2 or Revision 3, or
         b. Operate the aeroplane in accordance with the provisions and limitations specified in the operator's approved Minimum Equipment List, provided that no more than one thrust reverser on the aeroplane is inoperative.
      3. For 747-400 series aeroplanes listed in Boeing SB 747-78-2151, Revision 2, dated 13 January 2000 - Perform out the following actions:
         a. Install and activate a thrust reverser actuator system (TRAS) lock on each thrust reverser per the Accomplishment Instructions of Boeing SB
        747-78-2151, Revision 1, dated 21 August 1997; as revised by Notice of Status Change (NSC) 747-78-2151 NSC 04, dated 26 November 1997 and NSC 747-78-2151 NSC 05, dated 18 December 1997; or Boeing SB
        747-78-2151, Revision 2.
         b. If not previously accomplished:
             (i) Install a bracket and fastening hardware for the third locking system on each thrust reverser, per Lockheed Martin SB 78-1007, Revision 1, dated 18 March 1997, or Middle River Aircraft Systems (MRAS) SB 78-1007, Revision 2, dated 10 March 1998.
             (ii) Install wiring provisions in various areas of the aeroplane, per the Accomplishment Instructions of Boeing SB 747-78-2132, Revision 2, dated 11 December 1997.
             (iii) Install a TRAS lock (also called an electromechanical lock or brake) and a flexible drive cable on each thrust reverser, per Lockheed Martin SB 78-1020, Revision 2, dated 20 March 1997; or MRAS SB 78-1020, Revision 3, dated 16 March 1998; or MRAS CF6-80C2B SB 78-1020, Revision 4, dated 10 October 2002.
             (iv) Install new integrated display system (IDS) software in six integrated display units and three electronic flight information/engine indication and crew alerting system (EICAS) interface units, per the Accomplishment Instructions of Boeing SB 747-31-2242, dated
            18 April 1996.  Where the service bulletin specifies installation of IDS software version 995-0017-012, installation of IDS software version 995-0017-013, 995-0017-014, 995-0017-015, 995-0017-016, 995-0017-018, 3174-COL-EG5-01, 3177-COL-EG5-02, or 3176-COL-EG5-03 is also acceptable for compliance with this Requirement.

             (v) Replace two central maintenance computers (CMC), part number
            622-8592-103, with new, improved CMCs, part number 622-8592-105, and install new software for the CMCs, per the Accomplishment Instructions of Boeing SB 747-45-2016, Revision 1, dated 2 May 1996.  Where the 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 -