COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Oxygen Systems AD/OXY/11 Scott Aviation Oxygen Mask Plug-In Connectors PN 289-57 12/92 Applicability: Scott Aviation (Sierra Madre CA USA) Oxygen Plug-In Connector, Part Number 289-57, as installed in, but not limited to Boeing Model 727, 737, 747, 757 and 767 series aircraft; McDonnell Douglas DC-9-80 series aircraft and Fokker F-28 series aircraft. Note: The constant flow oxygen masks to which the connectors might be fitted include, but are not necessarily limited to, the following Scott Part Numbers: 289-127-5, 289-601-34, 289-601-35 and 289-601-234. Requirement: Action in accordance with the requirements of Scott Aviation Service Bulletin 289- 35-15 Revision 1 dated 12 June 1992. Note: FAA AD 92-16-15 Amdt 39-8324 dated 1 September 1992 refers. Compliance: Within 60 days from 12 November 1992. Background: The FAA has received reports that some plug-in connectors do not fully enter the fitting on portable emergency oxygen bottles, preventing the flow of emergency oxygen through face masks. Compliance with this Directive prevents a lack of oxygen flow from portable emergency oxygen bottles due to discrepant oxygen mask plug-in connectors.