Document ID: chunk:federal_register_of_legislation:F2006B09895:body:0
Version: federal_register_of_legislation:F2006B09895
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Fokker F50 (F27 Mk 50) Series Aeroplanes

                     AD/F50/66  Lavatory Pump and Filter Assembly Electrical Grounding

12/94

            Applicability: Model F27 Mk50 aircraft serial numbers 20103 through 20226 inclusive, 20270 through 20292 inclusive, 20296 through 20304 inclusive, 20306, 20307, 20309,
            20310 and 20312.

            Requirement: Action in accordance with accomplishment instructions of Fokker Service Bulletin F50-25-046 Revision 1 dated 5 August 1994.

            Note: RLD AD 94-129 (A) dated 31 August 1994 refers.

 Compliance: Prior to 10 May 1995.

            Background: The Lavatory Pump and Filter Assembly is driven by a 115V AC motor and the metal toilet bowl is connected to the housing of the electric motor.

            However, the motor housing is not connected to an effective ground. Consequently, should a failure of the electric motor occur, the toilet bowl may carry a high voltage. This Directive requires the installation of an electrical ground connection.