COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 320 Series Aeroplanes AD/CESSNA 320/21 Amdt 6 Applicability: All turbocharged models. Engine Exhaust System 3/87 Requirement: 1. Inspect engine exhaust system in accordance with Cessna SIL No. ME75-17, including "Expanded inspection and maintenance instructions" as detailed in Cessna SIL No. ME79-32. 2. Inspect those items listed in Table 2 of Cessna SIL No. ME79-32. 3. Replace multi-segment 'V' band exhaust clamps listed in Table 3 of Cessna SIL No. ME79-32. Note: FAA AD 75-23-08 Amdt 39-5451 Refers. Compliance: 1. At intervals not exceeding 50 hours time in service. 2. At intervals not exceeding 100 hours time in service. 3. At intervals not exceeding 750 hours time in service. Background: This Directive has been amended to include reference to the latest FAA AD amendment.