COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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 CASR 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.
Cessna 550 (Citation II) Series Aeroplanes
AD/CESSNA 550/24 BFGoodrich Brake Stator Discs 7/2004
Applicability: Model 550 and 551 aircraft, serial numbers 0002 through 0733; equipped with BFGoodrich brake assembly part number 2-1528-6 or 2-1530-4.
Requirement: Inspect in accordance with the requirements of FAA AD 2004-09-05 Amdt 39-13594.
Note: BFGoodrich Service Bulletins 2-1528-32-3 and 2-1530-32-3, both original issue, and Goodrich Service Bulletins 2-1528-32-2 and 2-1530-32-2, both Revision 5, refer.
Compliance: Within 50 landings or 90 days after 8 July 2004, whichever occurs first, for the initial inspection. As specified in the Requirement document for other compliance times, with a revised effective date of 8 July 2004.
This Airworthiness Directive becomes effective on 8 July 2004.
Background: The FAA requires a one-time inspection of the brake stator discs to determine to what change level they have been modified (if any), and related actions if necessary. This Directive also requires that the existing markings on the piston housing of certain brake assemblies be eliminated. The actions required by this Directive are intended to prevent wheel lock-ups that may be caused by cracked or broken brake stator discs becoming jammed in the brake assembly and preventing rotation. Such jamming may result in reduced directional control or braking performance during landing.
David Villiers
Delegate of the Civil Aviation Safety Authority 28 May 2004
The above AD is notified in the Commonwealth of Australia Gazette on 16 June 2004.
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Overview
The Civil Aviation Safety Regulations 1998 (CASR), specifically Part 39, addresses the safety of civil aviation by establishing regulatory requirements for aircraft airworthiness. This legislation was enacted by the Australian Government to ensure the safety of aircraft operating within Australian airspace, thereby protecting passengers, crew, and the general public. The Civil Aviation Safety Authority (CASA), as the delegate of the Australian Government, issues Airworthiness Directives under subregulation 39.1(1) of the CASR to mandate necessary safety measures. The policy objective behind these directives is to mitigate risks associated with aircraft operations and maintain high safety standards in the aviation industry.
One such Airworthiness Directive, AD/CESSNA 550/24, pertains to the inspection of BFGoodrich brake stator discs in Cessna 550 (Citation II) Series Aeroplanes. This directive was issued to address the risk of wheel lock-ups caused by cracked or broken brake stator discs, which could lead to reduced directional control or braking performance during landing. The directive requires a one-time inspection of the brake stator discs and mandates specific actions to be taken within a defined timeframe to ensure compliance and enhance aviation safety.
Scope and Application
The Civil Aviation Safety Regulations 1998 (CASR), specifically Part 39, establish the framework for ensuring the safety of civil aviation in Australia. This legislative instrument applies to aircraft and aeronautical products operating within Australian airspace, thereby encompassing a wide range of entities including commercial airlines, private aircraft operators, and maintenance providers. The regulation mandates specific actions to ensure the airworthiness of aircraft, as illustrated in Airworthiness Directive AD/CESSNA 550/24, which applies to Model 550 and 551 aircraft with certain serial numbers and equipped with particular BFGoodrich brake assembly parts. The directive requires an inspection of the brake stator discs to prevent potential wheel lock-ups, thereby ensuring operational safety. Compliance with such directives is mandatory and must be undertaken within a specified timeframe post the directive's effective date, in this case, within 50 landings or 90 days from 8 July 2004. The AD extends its reach nationally and is applicable to all relevant aircraft operating within Australia, reinforcing the Civil Aviation Safety Authority's commitment to maintaining high safety standards.
Key Provisions
The Airworthiness Directive (AD) specified in the Civil Aviation Safety Regulations 1998, under section 39.1, mandates particular actions to be taken in relation to certain Cessna 550 (Citation II) Series aeroplanes to address an unsafe condition. Specifically, the directive (AD/CESSNA 550/24) targets BFGoodrich brake stator discs on Model 550 and 551 aircraft, serial numbers 0002 through 0733, that are equipped with BFGoodrich brake assembly part numbers 2-1528-6 or 2-1530-4. The directive requires these aircraft to undergo inspection according to the requirements outlined in FAA AD 2004-09-05 Amdt 39-13594, with references to relevant BFGoodrich and Goodrich Service Bulletins.
The obligations imposed by this AD include ensuring that the specified aircraft undergo a thorough inspection to determine the modification level of the brake stator discs. This inspection must be completed within 50 landings or 90 days after the AD's effective date of 8 July 2004, whichever comes first. Furthermore, the AD mandates the elimination of existing markings on the piston housing of certain brake assemblies. These obligations are designed to prevent potential wheel lock-ups caused by cracked or broken brake stator discs becoming jammed in the brake assembly, which could compromise directional control or braking performance during landing.
Failure to comply with the requirements of this AD may result in serious safety implications, as the unaddressed condition could lead to hazardous situations during flight operations. The AD does not specify explicit penalties for non-compliance but underscores the critical nature of adhering to the stipulated safety measures. Non-compliance could potentially lead to regulatory action by the Civil Aviation Safety Authority, including enforcement actions under the Civil Aviation Act 1988, which could encompass fines, sanctions, or other legal consequences. The overarching aim is to ensure the continued airworthiness of the affected aircraft, thereby maintaining high safety standards in aviation.