Commonwealth legislation

AD/DHC-1/7 - Tailplane Attachment Lugs and Bulkhead - Inspection

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

What this does: This is a mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) that requires specific safety inspections on De Havilland DHC-1 Chipmunk aircraft.

Who it affects: Owners and operators of Chipmunk aircraft that haven't been modified according to factory modifications H66 or H70 (or equivalent approved modifications).

What it requires: The tailplane attachment lugs and bulkhead - critical structural parts that connect the horizontal tail to the aircraft body - must be inspected at every daily inspection (the routine check pilots or engineers perform before flight).

Why it matters: This addresses potential structural weaknesses in the tail attachment points. If these parts fail, the tail could separate from the aircraft with catastrophic consequences. The directive ensures potential cracks or damage are caught early through frequent inspection.

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Direct links to the current provisions in AD/DHC-1/7 - Tailplane Attachment Lugs and Bulkhead - Inspection.

AD/DHC-1/7 - Tailplane Attachment Lugs and Bulkhead - 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 De Havilland DHC-1 (Chipmunk) Series Aeroplanes

AD/DHC-1/7 Tailplane Attachment Lugs and Bulkhead - Inspection

3/53

Applicability: All models not modified in accordance with Chipmunk Mods. H66 and H70 or equivalent.

Document: 1. DH TNS CT(C1) Nos. 38 and 71; or

DH (Canada) TNS, Series “C”, No. 33; or 3. ANO 105.1.14.15.6.2

Compliance: At each daily inspection.

Source text

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