Commonwealth legislation

AD/R22/48 - Sprag Clutch

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

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This Airworthiness Directive requires owners/operators of Robinson R22 helicopters serial numbers 0002–2862 fitted with the specified sprag clutch (P/N 188-2) to replace that clutch in accordance with Robinson Service Bulletin SB‑85 and to remove the pink pilot-caution autorotation note from the flight manual. Compliance must occur within 30 calendar days or 50 hours time-in-service. The stated purpose is to prevent sprag-clutch cracking and possible loss of main-rotor RPM.

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Current sections

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AIRWORTHINESS DIRECTIVE

View image in the official source

View image in the official source
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/R22/48 Sprag Clutch 7/2000

Applicability: Model R22 helicopters serial number 0002 through 2862 fitted with S/N sprag clutch as detailed in Robinson SB-85.

Requirement: 1. Replace sprag clutch P/N 188-2 in accordance with the procedures detailed in Robinson Service Bulletin SB-85.

Remove the pink page Special Pilot Caution covering autorotation with a possible defective sprag clutch from the Normal Procedures Section of the R22 flight manual.

Note : FAA AD 2000-08-09 Amendment 39-11695 and FAA AD 99-07-17 refers.

Compliance: 1. Unless previously carried out, within 30 calendar days or 50 hours time in service, whichever occurs first, from the effective date of this Directive.

Upon accomplishment of Requirement 1.

This Airworthiness Directive becomes effective on 13 July 2000.

Background: Robinson Helicopter Co has advised that several sprag clutches have been returned from service with cracked sprag ends. To prevent sprag clutch failure with possible loss of main rotor RPM this Directive mandates replacement of the sprag clutch assembly.

Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority

Eugene Paul Holzapfel

Delegate of the Civil Aviation Safety Authority 19 May 2000

View image in the official source

The above AD is notified in the Commonwealth of Australia Gazette on 14 June 2000.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.