Commonwealth legislation

AD/R22/49 - Main Rotor Drive Shaft Yoke Half Assembly

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive applies to Robinson R22 helicopters with main rotor yoke half part number A203-5. It requires operators to inspect each yoke for cracks and to replace both yokes with serviceable part number A203-7 before further flight if a crack is found. It also requires checking each A203-5 lot identifier and replacing those with lot 24–43, letter codes, or illegible identifiers with A203-7. Compliance imposes inspection and parts-replacement costs on owners/operators.

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Current sections

Direct links to the current provisions in AD/R22/49 - Main Rotor Drive Shaft Yoke Half Assembly.

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/R22/49 Main Rotor Drive Shaft Yoke Ha

AD/R22/49 Main Rotor Drive Shaft Yoke Half Assembly 12/2000

Applicability: Model R22 helicopters, with a yoke half assembly part number A203-5 installed. Requirement: 1. Inspect each yoke for evidence of cracking, refer to Figure A.

If a yoke is cracked, before further flight, replace the yokes with serviceable yokes, part number A203-7. Both yokes must be replaced with yokes part number A203- 7.

Determine the Lot identifier of each yoke, P/N A203-5.

If the Lot identifier is from 24 through 43, if it is in letter code, or if it is illegible, replace yokes part number A203-5, with serviceable yokes part number A203-7. Yoke part number A203-7 cannot be installed with yoke part number A203-5.

View image in the official source

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.

AD/R22/49 Main Rotor Drive Shaft Yoke Ha AD/R22/49 Main Rotor Drive Shaft Yoke Half Assembly 12/2000

AD/R22/49 Main Rotor Drive Shaft Yoke Half Assembly 12/2000

Applicability: Model R22 helicopters, with a yoke half assembly part number A203-5 installed. Requirement: 1. Inspect each yoke for evidence of cracking, refer to Figure A.

If a yoke is cracked, before further flight, replace the yokes with serviceable yokes, part number A203-7. Both yokes must be replaced with yokes part number A203- 7.

Determine the Lot identifier of each yoke, P/N A203-5.