COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Oxygen Systems AD/OXY/5 Scott Oxygen Mask Connectors 4/86 Applicability: Scott Aviation oxygen connectors P/Nos 289-56 and 289-56-1. Note: The constant flow oxygen mask to which the affected connectors may be fitted include, but are not necessarily limited to the following Scott part numbers: 289-127, 289-127-2, 289-127-4, 289-128, 289-128-2, 289-360, 289-395, 289-701-23, 289-701-24, 289-701-223, 289-601-6, 289-601-13, 289-601-17, 289-601-206, 289- 601-213, 289-601-217. Requirement: Action in accordance with Scott Aviation Service Bulletin 289-35-10. Compliance: Within 30 days after 30 April 1986. Note: FAA AD 85-26-03 Amdt. 39-5182 refers. Background: To prevent the blockage of oxygen flow due to incompletely drilled oxygen connectors.