Commonwealth legislation

AD/BELL 222/17 - Drive Train Overheat Temperature Indicators

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD requires operators of Bell 222-series helicopters to replace zinc‑chromate colour‑stripe overheat indicators on grease‑lubricated couplings with TEMP‑PLATES per the cited Bell Alert Service Bulletin, at the next scheduled lubrication after 26 May 1994 and before installing replacement couplings/driveshafts. It responds to findings that the chromate stripes failed to show overheating clearly; operators/maintenance organisations bear costs, must follow the ASB, and record compliance.

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AD/BELL 222/17 - Drive Train Overheat Temperature Indicators

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Bell Helicopter Textron Canada (BHTC) 222 Series Helicopters

AD/BELL 222/17 Drive Train Overheat Temperature Indicators 6/94

Applicability: Models 222, 222B and 222U, all serial numbers.

Requirement: On all appropriate grease lubricated couplings, replace the zinc chromate type stripes with TEMP-PLATES in accordance with Part I of Bell ASB 222-93-67 Rev.A or 222U-93-40 Rev.A, as applicable.

Note: Canadian AD CF-94-06 BELL refers.

Compliance: At the next scheduled lubrication interval after 26 May 1994, and prior to installation of replacement couplings and/or driveshaft assemblies.

Background: Following an accident with a Bell 212 it was determined that the colour change in the chromate based primers applied to couplings, was not sufficiently distinct to warn of an overheated condition and subsequent impending failure.

Federal Register of Legislative Instruments F2006B04608

Source text

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

1 AD/BELL 222/17 - Drive Train Overheat Temperature Indicators