Commonwealth legislation

AD/AL 250/51 Amdt 1 - High Pressure Fuel Control Filter Assembly - Modification

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legislative instrument

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3/10 complexity

This AD mandates modifying the CECO high‑pressure fuel control filter assembly (parts 6895173 or 6896727) on Allison 250‑C20, C20B and C20J engines to prevent metal contamination of the MC‑40 fuel control and a possible power‑turbine overspeed. It affects owners, operators and maintenance organisations; work is required forthwith for C20/C20B and by 1 Aug 1983 for C20J. Operators bear costs and must follow Allison Alert CEB‑A‑1144 (and related FAA AD).

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AD/AL 250/51 Amdt 1 - High Pressure Fuel Control Filter Assembly - Modification

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 250/51

Amdt 1

High Pressure Fuel Control Filter Assembly - Modification

6/83

Applicability: All models 250-C20, C20B and C20J engines fitted with CECO P/N 6895173 or P/N 6896727 high pressure fuel control filter assemblies.

Document: Allison 250-C20, C20B and C20J Alert CEB-A-1144, Rev. 4.

Note: FAA AD No. 82-13-03 refers.

Compliance: For model 250-C20 and C20B : Forthwith.

For model 250-C20J : Not later than 1st August 1983.

Background: This Directive is issued to prevent possible metal contamination of the CECO Model MC-40 fuel control system power turbine governor which can result in power turbine rotor overspeed. It is raised in issue to Amdt 1 to include the model C20J as specified in Revision 4 of the Allison Document.

Source text

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

1 AD/AL 250/51 Amdt 1 - High Pressure Fuel Control Filter Assembly - Modification