Commonwealth legislation

AD/TPE 331/34 - Beryllium Spectrometric Oil Analysis

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Commonwealth

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legislative instrument

Plain English Summary

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This entry records cancellation of AD/TPE 331/34, which had required beryllium spectrometric oil ("SOAP") checks for AlliedSignal TPE331 engines. The cancellation follows Revision 1 to GTEC SB TPE 331‑72‑0530, which found the SOAP inspection ineffective at detecting beryllium‑copper nut erosion.

Practically, operators and maintenance organisations no longer must perform that AD‑mandated test, reducing compliance costs but leaving a potential detection gap unless an alternative is adopted.

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AD/TPE 331/34 - Beryllium Spectrometric Oil Analysis

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source AlliedSignal (Garrett/AiResearch) Turbine Engines - TPE 331 Series

AD/TPE 331/34 Beryllium Spectrometric Oil Analysis 9/88

CANCELLED.

Background: Revision 1 to GTEC SB TPE 331-72-0530 cancels the requirement to 'SOAP' check for beryllium as the inspection has not proved completely effective in detecting beryllium copper nut erosion. This Directive is therefore cancelled.

Source text

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