COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 320 Series Aeroplanes
AD/CESSNA 320/12
Amdt 1
Turbocharger 9/87
Applicability: All models 320D, 320E, and 320F fitted with Continental model TSIO-520-B engines.
Requirement: Remove the turbosupercharger turbine insulation blanket or stainless steel heat shields and visually inspect the complete surface of the TCM turbosupercharger assembly P/N 632729 (AID P/N 406610) for cracks, bulges, or burnt areas.
Note: Turbine housings exhibiting any cracks, bulges, or burnt areas shall be replaced before further flight.
Compliance: Prior to accumulating 425 hours total time in service and thereafter at each issue of a new Maintenance Release.
Background: This Airworthiness Directive was originally raised to reflect the requirement of FAA AD 70-3-4, effective 31 January 1970. This Amendment is raised to clarify the Requirement, and include reference to stainless steel heat shields, that were fitted beginning with 1972 models.