Commonwealth legislation

AD/BELL 205/50 - Main Rotor Grip/Blade Bolt - Inspection and Rework

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 Airworthiness Directive mandates a safety inspection for Bell 205 series helicopters with specific reworked parts. It targets main rotor grip assemblies that were repaired by the manufacturer (Bell Helicopter Textron) and had their grip bushings replaced.

What it requires:

Inspect and potentially rework the main rotor grip/blade bolt assembly
Follow the manufacturer's Service Bulletin 205-85-22 (a technical instruction document)

Who it affects:

Operators and maintenance engineers responsible for Bell 205 helicopters with affected reworked grips

Why it matters:

Reports showed improper clearance between the blade bolt head and grip bushing in certain reworked assemblies. This mechanical defect could compromise the rotor system, creating a serious flight safety hazard.

Compliance deadline:

Must be completed within 100 flight hours after 31 March 1985, or at the next scheduled maintenance inspection after that date (whichever occurs later).

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Current sections

Direct links to the current provisions in AD/BELL 205/50 - Main Rotor Grip/Blade Bolt - Inspection and Rework.

AD/BELL 205/50 - Main Rotor Grip/Blade Bolt - Inspection and Rework

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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 205 Series Helicopters

AD/BELL 205/50 Main Rotor Grip/Blade Bolt - Inspection and Rework

Applicability: All BHTI reworked grips which have had grip bushing(s) replaced. Requirement: Bell Alert S.B. 205-85-22.

3/85

Compliance: Within 100 hours time in service after 31 March 1985 or at the next scheduled inspection for maintenance release issue after 31 March 1985 whichever is the later.

Background: There have been reports where an improper clearance was evident between the blade bolt head flange and the grip bushing. These reports have only pertained to grip assemblies returned to BHTI for repair/overhaul.

Source text

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