COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 146 Series Aeroplanes AD/BAe 146/33 Pitot-Static System 7/91 Applicability: All series 200 and 200A Constructor' Nos E2164 and subsequent, and all series 300 and 300A Constructor's Nos E3118, E3163 and subsequent. Requirement: Action in accordance with Mandatory British Aerospace Service Bulletin 34-128- 00950J. Compliance: Prior to 31 July 1991. Background: It has been found that water traps form in the hoses fitted to post Mod. HCM 00950A&D (introduction of EFIS) aircraft.