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 369/80 Bolts in Main Transmission 7/90
Applicability: 1. All Model 369D, 369E serial numbers 0001E through 0352E and 369F/FF serial number 0001F through 0067FF series helicopters.
2. All spare MS21250-04036 bolts purchased from MDHC or directly from Air Industries since August 1988. Any spare transmission delivered prior to September 1989.
Requirement: Action in accordance with McDonnell Douglas SIN DN-166, EN-57 or FN-45, as applicable.
Compliance: For Helicopters: Unless previously carried out, within 300 hours time in service from 12 July 1990 or by 30 April 1991, whichever occurs first.
For Spares: Before installation on a helicopter after 30 May 1991.
Background: The manufacturer has advised that certain bolts may not meet industry standards.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, were introduced to address the need for stringent aviation safety standards to protect the public and ensure the safe operation of aircraft within Australian airspace. These regulations cover a wide range of safety directives, including specific maintenance and airworthiness requirements for various aircraft models. One such directive pertains to the McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters, as detailed in AD/HU 369/80. This directive was issued in response to concerns raised by the manufacturer about the compliance of certain bolts in the main transmission with industry standards. The policy objective is to ensure the safety and reliability of these helicopters by mandating specific maintenance actions to address the identified issue with the bolts.
The legislative instrument AD/HU 369/80 applies to all Model 369D, 369E, and 369F/FF series helicopters and mandates compliance with McDonnell Douglas service instructions to rectify the issue with the bolts in the main transmission. The requirement stipulates that for the affected helicopters, the necessary actions must be taken within 300 hours of time in service from 12 July 1990 or by 30 April 1991, whichever occurs first. For spare parts, the directive requires compliance before installation on a helicopter after 30 May 1991. This directive underscores the commitment to maintaining high safety standards in civil aviation through the enforcement of airworthiness directives.
Scope and Application
The Civil Aviation Regulations 1998, under Part 39 - 105, specifically addresses airworthiness directives concerning certain helicopter models, particularly the McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters. This legislative instrument mandates particular actions to be taken regarding bolts in the main transmission of these helicopters to ensure compliance with safety standards. The directive applies to all Model 369D, 369E, and 369F/FF serial numbers within specified ranges and to any spare MS21250-04036 bolts purchased from certain suppliers since specified dates. The requirement is to adhere to the actions detailed in McDonnell Douglas SIN DN-166, EN-57, or FN-45, depending on the applicable circumstances. Compliance for helicopters necessitates action within 300 hours of service from 12 July 1990 or by 30 April 1991, whichever is sooner, while spares must comply before installation after 30 May 1991. This regulation is a response to the manufacturer's advisory that certain bolts may not meet industry standards, thereby necessitating these specific safety measures.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, detail various directives for ensuring the airworthiness of aircraft, including the McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters, as outlined in AD/HU 369/80. This directive pertains to bolts in the main transmission of these helicopters. Section 1 specifies the applicability of the directive to certain model numbers and serial ranges, including Model 369D, 369E, and 369F/FF, as well as specific spare parts procured from designated manufacturers or suppliers. The requirement is to take action in accordance with McDonnell Douglas Service Instructions (SIN) DN-166, EN-57, or FN-45, as applicable, to address potential issues with the bolts.
The obligations under this directive are clear: operators of the affected helicopters must ensure compliance with the specified service instructions. For the helicopters themselves, compliance must be achieved within 300 hours of time in service from 12 July 1990 or by 30 April 1991, whichever comes first. For spare parts, the directive mandates that any bolts installed after 30 May 1991 must adhere to the specified service instructions before being installed on a helicopter. This ensures that both in-service helicopters and newly procured spare parts meet the necessary safety standards.
Failure to comply with the airworthiness directives can lead to serious consequences. The regulations outline potential offences and penalties for non-compliance, although the specific penalties are not detailed in the provided text. Generally, non-compliance with civil aviation regulations can result in significant civil or criminal penalties, including fines and potential grounding of the aircraft. Ensuring adherence to these directives is crucial for maintaining the safety and airworthiness of the affected helicopters.