Commonwealth legislation

AD/S-76/59 Amdt 1 - Tail Rotor Control Rod - Rod Ends

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 mandatory Airworthiness Directive requires Sikorsky S‑76 owners to inspect tail rotor control rod "rod ends" for cracking and corrosion per Sikorsky Alert Service Bulletin 76‑65‑45 Rev A and replace any defective parts. Failure can cause loss of tail rotor control and uncontrollable spin.

Comply at the next scheduled maintenance or within 150 flight hours after 13 July 1994; prior replacements done under the original 1994 directive are exempt. Amendment 1 adds pitting‑corrosion checks and incorporates the revised manufacturer standard.

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Current sections

Direct links to the current provisions in AD/S-76/59 Amdt 1 - Tail Rotor Control Rod - Rod Ends.

AD/S-76/59 Amdt 1 - Tail Rotor Control Rod - Rod Ends

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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 Sikorsky S-76 Series Helicopters

AD/S-76/59

Amdt 1

Applicability: All models.

Tail Rotor Control Rod - Rod Ends 9/94 DM

Requirement: Action in accordance with Sikorsky ASB 76-65-45 Revision A.

Compliance: Unless already accomplished, at the next scheduled inspection of the tail rotor control rods, or at the next 150 hour inspection after 13 July 1994, whichever occurs first.

The effective date of the initial issue of this Directive was 25 May 1994.

Work in addition to the initial issue is not required if the rod ends were removed from the barrels and any corroded rod ends were replaced during compliance with that issue.

Background: Cracking in the exposed threaded end of the control rods, rod ends may be occurring. Failure of a control rod end may result in loss of tail rotor control. Amendment 1 is the result of pitting corrosion found in an Australian aircraft, and of a Revision to the initial issue of the ASB.

Source text

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