Commonwealth legislation

AD/DHC-6/28 - Engine Compressor Inlet Screens - Icing Restrictions

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

1/10 complexity

This Airworthiness Directive (AD) is a safety rule requiring specific action on De Havilland DHC-6 (Twin Otter) aircraft engines to prevent dangerous icing conditions.

What it requires: Operators must comply with De Havilland Service Bulletin No. 6/282 regarding the engine compressor inlet screens.

Who is affected: Owners and operators of DHC-6 aircraft fitted with PT6-20 or PT6-27 engines that use fine mesh engine compressor inlet screens.

Why it matters: The fine mesh screens can be susceptible to ice accumulation, which restricts airflow to the engine compressor and could cause engine failure or reduced performance.

Compliance deadline: Aircraft must meet these requirements before 1 September 1971.

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AD/DHC-6/28 - Engine Compressor Inlet Screens - Icing Restrictions

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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 DHC-6 (Twin Otter) Series Aeroplanes

AD/DHC-6/28 Engine Compressor Inlet Screens - Icing Restrictions

8/71

Applicability: All models with PT6-20 and -27 engines using fine mesh engine compressor inlet screens.

Document: De Havilland Aircraft of Canada SB No. 6/282. Compliance: Before 1 September 1971.

Source text

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