Commonwealth legislation

AD/CA21/6 - Life Limited Components

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legislative instrument

Plain English Summary

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This airworthiness directive requires specific structural components on all Skyfox (Calair/Hedaro) CA21 and CA22A aeroplanes to be retired after set hours in service (4,000 or 8,000 hours), effective 29 February 1996. Based on manufacturer stress/fatigue analyses, it makes owners/operators responsible for tracking hours, removing and replacing parts, and bearing the resulting maintenance costs and operational downtime.

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AD/CA21/6 - Life Limited Components

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Skyfox Aviation (Calair/Hedaro) CA21 and CA22A Series Aeroplanes

AD/CA21/6	Life Limited Components	3/96
Applicability:	All CA21 and CA22A aircraft.
Requirement:	The following components are to be retired from service at the times shown:

Component Maximum Time in Service

Wing Front and Rear Spars 4000 Hours Wing Lift Struts and Carry-Through Structure 4000 Hours Horizontal Stabiliser Spar 8000 Hours All Other Structure, Except Doors and Fairings 8000 Hours

Compliance: As specified in the Requirement, with effect from 29 February 1996.

Background: The fatigue life limits in this Directive are the best estimates, based on stress and fatigue analyses supplied by the manufacturer.

Source text

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

1 AD/CA21/6 - Life Limited Components