Commonwealth legislation

AD/ECUREUIL/11 Amdt 2 - Main Gear Box - Spectrometric Analysis of Lubricating Oil

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive requires operators of AS350 (Ecureuil) helicopters fitted with bevel reduction gear modules P/N 350A32-0300-00 or 01 to carry out spectrometric analysis of main gearbox lubricating oil in accordance with Service Bulletin No. 05.06 Revision 2. The Civil Aviation Safety Authority mandates compliance and operators pay for sampling, analysis and any follow-up. The measure replaces a prior spline-wear inspection; certain modified modules (P/N 350A32-0300-02 or 00/01 modified to AMS 07-7042 or AMS 07-7027) are exempt.

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AD/ECUREUIL/11 Amdt 2 - Main Gear Box - Spectrometric Analysis of Lubricating Oil

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Eurocopter AS 350 (Ecureuil) Series Helicopters

AD/ECUREUIL/11

Amdt 2

Main Gear Box - Spectrometric Analysis of Lubricating Oil

10/88

Applicability: All model AS 350 helicopters fitted with bevel reduction gear modules P/N 350 A32- 0300-00 or 01.

Note: Reduction gear module P/N 350A32-0300-02 with vertical shaft modified to AMS 07-7027 or modules P/N 350 A32-0300-00 or 01 modified to either AMS 07- 7042 or AMS 07-7027 are exempt from the requirement of this Directive.

Requirement: Action in accordance with SB No 05.06 Revision 2. Compliance: As detailed in the requirement document.

Background: This AD supersedes AD/ECUREUIL/9, which is CANCELLED. The manufacturer considers that the wear check to the bevel gear module shaft splines called up in Telex Service 05-05 (AD/ECUREUIL/9) was inaccurate, and has introduced a spectrometric monitoring programme for the main gearbox oil. The manufacturer has further advised that modified bevel gear reduction modules do not require inspection. Amendment 2 to this Directive details those modules.

Source text

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

1 AD/ECUREUIL/11 Amdt 2 - Main Gear Box - Spectrometric Analysis of Lubricating Oil