Commonwealth legislation

AD/AL 250/53 Amdt 1 - Compressor Mount Assembly

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive requires operators of Allison 250‑C28 and 250‑C30 engines fitted with compressor mounts P/N 6896021, 6898966 or 6898611 (serial numbers in the Requirement Document) to inspect those mounts per Allison CEB‑A‑72‑2080/3081 and to replace them with mount P/N 23007217 per Allison CEB‑72‑2085/3085 Rev.1. It implements FAA AD 85‑25‑08; operators must schedule the inspection and the mandated replacement at the next compressor overhaul after 28 Feb 1986, and no later than 30 Nov 1986, bearing the inspection and replacement costs and following the prescribed service documents.

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AD/AL 250/53 Amdt 1 - Compressor Mount Assembly

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Allison Turbine Engines - 250 Series

AD/AL 250/53

Amdt 1

Compressor Mount Assembly 2/86

Applicability: Model 250-C28 and -C30 series engines which incorporate compressor mount assemblies P/N 6896021, 6898966 or 6898611 with serial numbers as listed in the Requirement Document.

Requirement: 1. Inspect compressor mount assemblies P/N 6896021, 6898966 and 6898611 in accordance with Allison CEB-A-72-2080/3081 dated 15 September 1982.

Replace compressor mount assemblies P/N 6896021, 6898966 and 6898611 with mount P/N 23007217 in accordance with Allison CEB-72-2085/3085 Rev. 1 dated 30 April 1985.

Note: FAA AD 85-25-08 Amendment 39-5189 refers.

Compliance: Part 1. In accordance with the Requirement Document.

Part 2. At the next compressor assembly overhaul or repair after 28 February 1986 but not later than 30 November 1986.

Background: This Directive is amended to include the FAA AD 85-25-08 mandatory introduction of the improved compressor mount assy.

Source text

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

1 AD/AL 250/53 Amdt 1 - Compressor Mount Assembly