Commonwealth legislation

AD/BELL 212/46 - Main Rotor Drag Brace Assembly

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This CASA Airworthiness Directive requires all Bell 212 operators to comply with FAA AD 90-26-11, mandating inspections and corrective action on the main rotor drag brace assembly after reports of high‑cycle, low‑stress fatigue cracks that were not found by daily visual checks and only discovered during hub overhaul.

Operators and their maintenance providers must bear the compliance costs and follow the FAA’s inspection timing and procedures rather than relying on routine visual inspections.

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AD/BELL 212/46 - Main Rotor Drag Brace Assembly

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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 Bell Helicopter Textron 212 Series Helicopters

AD/BELL 212/46 Main Rotor Drag Brace Assembly 7/91

Applicability: All models.

Requirement: Action in accordance with the Technical Requirements of FAA AD 90-26-11, Amendment 39-6840.

Compliance: In accordance with the Requirement document with revised effective date 11 July 1991.

Background: Eight reports of drag brace assembly cracking have been attributed to high cycle, low stress fatigue. The cracks had gone undetected at daily visual inspections and were not actually detected until after hub assembly overhaul.

Source text

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