Commonwealth legislation

AD/AS 355/8 - Main Gearbox Filter - Inspection

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This AD mandates inspection of the main gearbox oil filter on Eurocopter AS 355 helicopters fitted with a TEDECO magnetic plug (Part No. B4439) with electrical indication, at intervals not exceeding 100 hours time‑in‑service, effective from 31 March 1983. Helicopters modified per A.M.S. 07.1211 are exempt.

It affects owners, operators and maintenance organisations, increasing recurring inspection costs and downtime and creating an incentive to pursue the A.M.S. 07.1211 modification; inspection procedure is in AS 355 SB 05.07.

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AD/AS 355/8 - Main Gearbox Filter - Inspection

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Eurocopter AS 355 (Twin Ecureuil) Series Helicopters

AD/AS 355/8 Main Gearbox Filter - Inspection 3/83

Applicability: All model AS 355 helicopters, having the main gearbox fitted with a TEDECO magnetic plug, Part Number B4439 with electrical indication (optional SB 63.02 refers) and not modified in accordance with A.M.S. 07.1211.

Document: AS 355 SB 05.07.

Note: Bureau Veritas AD 82-180-9(B) refers.

Compliance: At periods not exceeding 100 hours time in service after 31st March 1983.

Background: The manufacturer advises of the need to reduce the inspection interval for the main gearbox oil filter, on helicopters fitted with the TEDECO magnetic plug installation.

Source text

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