COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 737 Series Aeroplanes AD/B737/76 Flight Control Cable Guards 5/93 Applicability: Model 737-100, -200, -300, and -400 series, with all line numbers through to 1869. Requirement: a. Replace plastic flight control cable guards with aluminium cable guards in accordance with Boeing Service Bulletin 737-27A1164 Revision 1. b. Remove any previously-installed aluminium cable guards located at right buttock line (RBL) 6.60, between body stations (BS) 947.5 and 967, and relocate the aluminium cable guards to RBL 14.75, between BS 947.5 and 967; and verify that grommets are properly installed at all locations; in accordance with Boeing Service Bulletin 737-27A1164 Revision 1. Note: FAA AD 93-01-27 Amdt 39-8481 refers. Compliance: Prior to 9 March 1997. Background: The FAA had received a report of locked elevator controls and horizontal stabiliser trim; caused by plastic cable guards that had melted onto the control cables.