COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 206 Series Aeroplanes AD/CESSNA 206/44 Electrical Power Distribution and Control 8/86 Applicability: All Cessna Model U206G and FAA STC SA2353NM (Soloy TU206G aeroplanes modified in accordance with U.S. Turbine Conversion) with the following serial numbers: CESSNA SERIAL NUMBER SOLOY DATA PLATE NO U20603989 763-013 U20604266 763-001 U20604287 763-003 U20604881 763-014 U20605232 763-005 U20605567 763-002 U20605584 763-015 U20605745 763-008 U20605936 763-006 U20606065 763-007 U20606227 763-004 U20606381 763-011 U20606628 763-010 U20606768 763-012 U20606816 763-009 Requirement: 1. Replace the voltage regulator in accordance with Soloy Service Bulletin 04-763. 2. For aeroplanes with S/Nos. U20604266, U20604287, U20605232, U20605567, U20605745, U20605936, U20606065 and U20606227, modify the electrical system circuit breaker installation in accordance with Soloy Service Bulletin 02- 763. Note: FAA AD 86-11-07 Amendment 39-5324 refers. Compliance: For Para 1: Within 100 hours time in service after 31 August 1986. For Para 2: Within 200 hours time in service after 31 August 1986. COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Background: 1. The existing voltage regulator installation has been shown to interfere with the ADF system such as to cause erroneous bearing information to be displayed. 2. The engine start circuit and the auto feather circuit are at present connected to the same circuit breaker. Opening this circuit breaker by an electrical fault or by pilot action will render both circuits inoperative.