COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace BAe 146 Series Aeroplanes
AD/BAe 146/47 Windshear Detection and Recovery System 10/93
Applicability: All series BAe 146 aircraft equipped with a Safeflight Windshear Computer introduced by BAe Modification HCM40270A&B.
Requirement: Action in accordance with British Aerospace BAe 146 Alert Inspection Service Bulletin S.B.34-A155 dated 9 July 1993.
Note: Compliance with this Service Bulletin has been classified as Mandatory by the CAA(UK).
Compliance: Prior to further flight after 30 September 1993 and thereafter at each subsequent `A’ check or after 300 flight cycles, whichever is the sooner, until a modified Safeflight Windshear Computer is installed.
Background: BAe have received reports that the windshear computer may not detect the loss of flap position signal, this may result in incorrect guidance information being displayed on the flight director. Compliance with this Directive will increase the possibility of early detection of the fault.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, provide comprehensive guidelines to ensure the safety and efficiency of civil aviation within the country. This legislation includes specific directives concerning the airworthiness of aircraft, such as the Airworthiness Directive AD/BAe 146/47 related to the British Aerospace BAe 146 Series Aeroplanes. This directive, introduced to address the problem of potential malfunctions in the windshear detection and recovery system, was issued to ensure that all BAe 146 aircraft equipped with a Safeflight Windshear Computer adhere to stringent safety standards. By requiring compliance with the British Aerospace Service Bulletin S.B.34-A155, the policy objective is to mitigate risks associated with the detection of windshear events, thereby enhancing flight safety.
The enacting body, the Australian Parliament, aimed to bridge the gap in aviation safety through these regulations by ensuring that aircraft meet specified standards before further operation. The directive mandates that the affected aircraft undergo necessary inspections and modifications to the windshear computer system to prevent incorrect guidance information being displayed on the flight director. This proactive approach underscores the commitment to maintaining high safety standards in civil aviation and minimising potential hazards to flight operations.
Scope and Application
The Civil Aviation Regulations 1998, under PART 39 - 105, apply to all series BAe 146 aircraft equipped with a Safeflight Windshear Computer introduced by BAe Modification HCM40270A&B. This legislation is issued by the Civil Aviation Safety Authority and is concerned with ensuring the airworthiness of the British Aerospace BAe 146 Series Aeroplanes. The scope of the regulation is specific to the installation and maintenance of a Windshear Detection and Recovery System within the mentioned aircraft series. Compliance with the directive is mandatory, requiring action in accordance with British Aerospace BAe 146 Alert Inspection Service Bulletin S.B.34-A155 dated 9 July 1993, which has been classified as such by the Civil Aviation Authority (UK). The requirement stipulates that the action must be taken before further flight after 30 September 1993 and at each subsequent 'A' check or after 300 flight cycles, whichever comes sooner, until a modified Safeflight Windshear Computer is installed. This ensures that any potential faults in the windshear detection system, such as the inability to detect the loss of flap position signal, are addressed to maintain the safety of the aircraft operations.
Key Provisions
The Civil Aviation Regulations 1998, particularly under PART 39 - 105, mandate specific requirements for the maintenance and operation of British Aerospace BAe 146 Series aeroplanes, ensuring their continued airworthiness. Section AD/BAe 146/47 addresses the need for a Windshear Detection and Recovery System (section 10/93). This regulation applies to all BAe 146 aircraft equipped with a Safeflight Windshear Computer introduced by BAe Modification HCM40270A&B. To comply with these regulations, operators must adhere to the instructions outlined in British Aerospace BAe 146 Alert Inspection Service Bulletin S.B.34-A155 dated 9 July 1993. This compliance has been designated as mandatory by the Civil Aviation Authority (UK).
The obligations under these regulations require that the specified actions be taken before further flights after 30 September 1993 and at each subsequent 'A' check or after 300 flight cycles, whichever occurs first, until a modified Safeflight Windshear Computer is installed. This ensures that the aircraft's ability to detect windshear is maintained and that the risk of incorrect guidance information being displayed to the flight crew due to a loss of flap position signal is minimised. The requirement to comply with the Service Bulletin is a direct measure to enhance flight safety by increasing the likelihood of early fault detection.
Failure to comply with the AD/BAe 146/47 regulations can result in serious consequences. The Civil Aviation Safety Authority (CASA) can impose penalties for non-compliance, which may include fines or other enforcement actions. The exact nature and severity of these penalties will depend on the specifics of the breach and the discretion of the regulatory authority. The primary objective of these provisions is to ensure that all BAe 146 aircraft operate within safe parameters, thereby protecting both the crew and passengers from potential hazards associated with undetected windshear conditions.