Commonwealth legislation

AD/BELL 407/6 - Engine to Transmission Driveshaft Replacement

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive orders operators of Bell 407 helicopters (serial nos. 53000 and 53002–53066) to replace driveshaft part number 206-340-300-103 with part number 206-340-300-105 under BHTC Alerts Service Bulletin ASB 407-98-19, within 50 flight hours (Requirement; Compliance). Removed driveshafts must be rendered unusable or quarantined. The directive’s stated reason is that the original driveshaft does not meet certification criteria (Background). Operators must fund and schedule the work.

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Current sections

Direct links to the current provisions in AD/BELL 407/6 - Engine to Transmission Driveshaft Replacement.

AD/BELL 407/6 - Engine to Transmission Driveshaft Replacement

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Bell Helicopter Textron Canada (BHTC) 407 Series Helicopters

AD/BELL 407/6 Engine to Transmission Driveshaft Replacement 5/99

Applicability: Bell (BHTC) Model 407 helicopters, serial numbers 53000 and 53002 through 53066. Requirement: Replace driveshaft part number 206-340-300-103 with driveshaft part number 206-

340-300-105 in accordance with the instructions in BHTC Alerts Service Bulletin

(ASB) 407-98-19 dated 19 June 1998. All removed driveshafts are to be rendered unusable or identified as unairworthy and quarantined from airworthy parts.

Note: Transport Canada Airworthiness Directive CF-98-25R1 refers.

Compliance: Within the next 50 hours flight time after the effective date of this Directive.

This Airworthiness Directive becomes effective on 20 May 1999.

Background: A recent evaluation of the engine to transmission driveshaft concluded that the current configuration does not meet certification criteria. Replacement of the driveshaft has therefore been mandated to remove the non compliant component.

Source text

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

1 AD/BELL 407/6 - Engine to Transmission Driveshaft Replacement