COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters
AD/HU 369/1
Amdt 16
Retirement Life - Fatigue Critical Components 7/95
Applicability: All models.
Requirement: As applicable to each helicopter model, all components listed in the following references shall be retired at or before the times quoted therein.
- For 369H, 369HE, 369HM and 369HS series: Hughes 369H Series Basic Handbook of Maintenance Instructions Appendix “B” (CSP-H-4), Reissued 17 March 1992, Revision 3, Section 2.
2. For 369D, 369E, 369FF and 500N series: Hughes 369D, 369E 369FF and 500N series Basic Handbook of Maintenance Instructions (CSP-HMI-2) issued October 31 1990, Revision 11, Chapter 4.
Note: Operators of aircraft engaged in unusual manoeuvres, such as agricultural, cattle mustering or operations where more than four rotor full stops per hour are achieved must consult the manufacturer giving full details including previous history of all operations for possible life revision and must advise the Authority accordingly. For the purposes of notification, two flights concluding with the rotor turning at idle or greater power setting shall be counted as equivalent to one flight with rotors to a full stop.
Compliance: This Amendment is effective 22 June 1995.
Background: This Amendment references the latest issue of the Requirement Documents which also cover the models 369FF and 500N.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and regulation of civil aviation within Australia. Specifically, Part 39 of these regulations addresses the airworthiness directives necessary to maintain the safety of aircraft in operation. One such directive, AD/HU 369/1 Amendment 16, pertains to the retirement life of fatigue critical components in McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters. This amendment was introduced to address the need for ensuring the longevity and safety of specific helicopter components by establishing retirement timelines based on operational history and usage patterns, particularly for helicopters engaged in activities with high rotor stop frequencies such as agricultural or cattle mustering operations. The policy objective is to mitigate risks associated with component fatigue, thereby enhancing overall aviation safety.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 concerning the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, applies to all operators of McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters, mandating compliance with the stipulated maintenance and retirement directives for fatigue-critical components. This regulation applies nationally within Australia, overseen by the Civil Aviation Safety Authority (CASA) and covers both civilian and commercial operators of the specified helicopter models. The directive is applicable to all models of the 369 series, including the 369H, 369HE, 369HM, 369HS, 369D, 369E, 369FF, and 500N. The requirement is to retire specific components at or before the times quoted in the referenced maintenance handbooks, which are detailed in Hughes 369H Series Basic Handbook of Maintenance Instructions and the Hughes 369D, 369E, 369FF, and 500N series Basic Handbook of Maintenance Instructions. Operators engaged in activities such as agricultural or cattle mustering, where rotors are subjected to more than four full stops per hour, must consult the manufacturer for potential life revisions and notify CASA accordingly. This amendment became effective on 22 June 1995, ensuring that all operators adhere to the updated maintenance schedules to maintain airworthiness standards.
Key Provisions
The primary operative sections of the Civil Aviation Regulations 1998, Part 39 - 105, in relation to the McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters, mandate the retirement of specific fatigue critical components at prescribed times (Section 1). For the 369H, 369HE, 369HM, and 369HS series, these requirements are detailed in Hughes 369H Series Basic Handbook of Maintenance Instructions Appendix "B" (CSP-H-4), Reissued 17 March 1992, Revision 3, Section 2, while the 369D, 369E, 369FF, and 500N series have their requirements outlined in Hughes 369D, 369E, 369FF and 500N series Basic Handbook of Maintenance Instructions (CSP-HMI-2), issued October 31, 1990, Revision 11, Chapter 4. Operators engaging in unusual manoeuvres, such as agricultural, cattle mustering, or operations involving more than four rotor full stops per hour, must consult the manufacturer for potential life revisions and notify the Civil Aviation Safety Authority accordingly.
Operators of these helicopters are required to adhere to the stipulated retirement times for the specified components to ensure airworthiness and safety. This obligation includes maintaining records and documentation of all maintenance activities and retirements, as mandated by the regulations (Section 1). In cases where helicopters are used in unusual manoeuvres, operators must provide detailed histories of these operations to the manufacturer to determine if any adjustments to the retirement schedules are necessary. Furthermore, the operators must promptly inform the Civil Aviation Safety Authority of any such adjustments.
Failure to comply with these requirements can result in significant consequences. Non-compliance with the specified retirement times for critical components may lead to the grounding of the helicopter, which can disrupt operations and potentially compromise safety. Additionally, operators who fail to consult with manufacturers or notify the authority of revised life schedules when engaging in unusual manoeuvres may face regulatory scrutiny and enforcement actions (Section 2). While the specific penalties for non-compliance are not detailed in the provided text, it is clear that adherence to these regulations is crucial to avoid adverse outcomes, including potential civil or criminal penalties as prescribed by the Civil Aviation Regulations.