Commonwealth legislation

AD/BELL 206/101 Amdt 1 - Tail Boom to Gearbox Attachment

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

This is a helicopter safety rule issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations.

It requires operators of specific Augusta Bell helicopter models (AB206A and AB206B series equipped with tail rotor hub assembly part number 206-011-810) to:

Inspect the tail boom for cracks near where it attaches to the gearbox, following the manufacturer's Technical Bulletin 206-172 Rev A
Check the torque (tightness) of the nut that holds the tail gearbox in place — this is a new requirement added by this amendment

Who it affects: Helicopter operators, pilots, and maintenance engineers working on these specific Bell/Agusta models.

Why it matters: Cracks near the gearbox mounting can weaken the aircraft structure and potentially cause the tail section to fail. The added torque check ensures the gearbox remains securely attached during flight.

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Current sections

Direct links to the current provisions in AD/BELL 206/101 Amdt 1 - Tail Boom to Gearbox Attachment.

AD/BELL 206/101 Amdt 1 - Tail Boom to Gearbox Attachment

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters

AD/BELL 206/101

Amdt 1

Tail Boom to Gearbox Attachment 11/88

Applicability: All Augusta Bell AB206A and AB206B equipped with tail rotor hub assembly P/N 206-011-810 (all dash numbers).

Requirement: Inspect the tail boom in accordance with Agusta Technical Bulletin 206-172 Rev A. Compliance: As detailed in the Requirement Document.

Background: Agusta Technical Bulletin 206-172 reports cracks in service near the gearbox mounting and introduces a mandatory inspection schedule. This revision adds a torque check of the tail gear box fixing nut.

Source text

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