Commonwealth legislation

AD/DHC-1/38 - Re-Classification of Existing Modifications to Mandatory Status

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legislative instrument

Plain English Summary

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This airworthiness directive makes certain previously non‑mandatory modifications mandatory for all De Havilland DHC‑1 (Chipmunk) aircraft. Operators and owners must carry out the changes in accordance with British Aerospace Mandatory Technical News Sheet CT (C1) No. 200 by 19 September 1997; the AD is effective from 19 June 1997.

Mechanically, the rule shifts the compliance burden onto aircraft owners/operators who must inspect records, implement the TNS instructions if missing, and absorb associated costs and downtime.

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AD/DHC-1/38 - Re-Classification of Existing Modifications to Mandatory Status

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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 De Havilland DHC-1 (Chipmunk) Series Aeroplanes

AD/DHC-1/38 Re-Classification of Existing Modifications

to Mandatory Status

Applicability: All DHC-1 Chipmunk aircraft.

7/97

Requirement: Action in accordance with British Aerospace Mandatory Technical News Sheet (TNS) CT (C1) No. 200.

Note 1: TNS CT (C1) No.200 also informs operators how to determine that the required modifications have been incorporated on their aircraft.

Note 2: UK CAA AD 006-03-97 refers.

Compliance: Unless already accomplished, before 19 September 1997.

This airworthiness directive becomes effective on 19 June 1997.

Background: The UK CAA requires that certain modifications be incorporated, in order to ensure the continued airworthiness of Chipmunk aircraft.

Source text

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