Commonwealth legislation

AD/HU 269/84 - Thrust Bearing Tube

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 safety rule (called an Airworthiness Directive) that mandates a specific maintenance check for certain helicopters to prevent mechanical failure.

Who it affects: Owners and operators of all Schweizer (Hughes) model 269 series helicopters.

What you must do: Follow the manufacturer's instructions in Schweizer Service Information Notice No. N-203 regarding the thrust bearing tube. This must be completed:

At the next scheduled inspection for Maintenance Release issue after 4 June 1987; and
Every time the main rotor hub assembly is installed thereafter.

Why it matters: Reports indicated that incorrect (improper) thrust bearing tubes were being installed during maintenance of the main rotor drive shaft. Using the wrong parts creates a serious risk of mechanical failure and potential accidents. This directive ensures the correct parts are inspected and installed properly.

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AD/HU 269/84 - Thrust Bearing Tube

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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 Schweizer (Hughes) 269 Series Helicopters

AD/HU 269/84 Thrust Bearing Tube 6/87

Applicability: All model 269 helicopters.

Requirement: Action in accordance with Schweizer Service Information Notice No. N-203.

Compliance: At the next schedule inspection for Maintenance Release issue after 4 June 1987 and thereafter at each installation of the main rotor hub assembly.

Background: Reports indicate that improper thrust bearing tubes have been installed during the installation of main rotor drive shaft and thrust bearing.

Source text

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