Commonwealth legislation

AD/CON/76 - Superior Pistons

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legislative instrument

Plain English Summary

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Requires replacement of Superior Air Parts pistons (P/N SA626992 or SA626992P15) in Teledyne Continental O-470‑K/L/R engines when the engine is next disassembled, with replacements fitted according to approved maintenance data. Engines may remain in service until that disassembly and affected pistons can be identified by stamped or casting numbers. The directive cites an FAA AD and the manufacturer’s advice of a possible manufacturing defect. Owners/operators pay for replacements and must track disassembly timing and approved PMA replacement listings.

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AD/CON/76 - Superior Pistons

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Teledyne Continental Motors Piston Engines

AD/CON/76 Superior Pistons 10/96

Applicability: Teledyne Continental Motors O-470-K, -L and -R model engines fitted with Superior Air Parts Inc. Parts Manufacturing Approval (PMA) pistons part number SA626992 or SA626992P15.

Requirement: To prevent piston failure which could result in engine power loss or engine failure, replace Superior Air Parts pistons P/N SA626992 or SA626992P15 with pistons as detailed in approved maintenance data, including appropriate PMA listings.

Note 1: This directive does not require engines to be disassembled to identify the piston part number. Even if the applicable Superior pistons are fitted, the engine may remain in service until the next disassembly which permits access to the pistons.

Note 2: Applicable Superior pistons can be identified by the part number SA626922 or SA626922P15 stamped into the piston dome, or by a raised casting number SA632932 evident along one of the piston pin bosses.

Note 3: FAA Airworthiness Directive 96-12-04 refers.

Compliance: At next disassembly of the engine, for whatever reason, which permits access to the pistons, effective on 12 September 1996.

Background: This directive requires certain pistons to be removed from service. The requirement is in response to the issue of an FAA airworthiness directive on this subject. The FAA airworthiness directive follows the manufacturer's advice of a possible manufacturing defect in certain pistons.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/CON/76 - Superior Pistons