COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
British Aerospace BAe 3100 (Jetstream) Series Aeroplanes
AD/JETSTREAM/74
Amdt 1
Autopilot Trim Relays 8/97
Applicability: All Jetstream Series 3100 aeroplanes equipped with an autopilot installed under Jetstream Aircraft Ltd Modifications JK3027, 3243, 3352 or 3483.
Requirement: Modify the autopilot system, by the installation of two additional relays and associated wiring changes, in accordance with Jetstream Aircraft Ltd Mandatory Service Bulletin 22-JK 2628 Revision 2 dated 21 October 1996.
Note: This Service Bulletin has been classified as Mandatory by the CAA(UK).
Compliance: Prior to 31 October 1997, unless previously accomplished.
This airworthiness directive becomes effective on 17 July 1997.
Background: This amendment corrects a typographical error identifying the applicable modifications. The Prefix “JM” has been amended to read “JK’.
British Aerospace, Civil Aircraft Division, Notice to Operators JS22/3 issued on
13 February 1986 and Service Bulletin 22-JA 860214 dated 6 February 1987, together with a subsequent revision to the Maintenance Schedule, introduced an 800 hour life limit on the pitch up and pitch down relays in the autopilot system.
Following compliance with this Directive, the 800 hour life limit will no longer apply. The original issue of this airworthiness directive became effective on
30 January 1997.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, aim to ensure the safety and efficiency of civil aviation within the country. This legislation, particularly Part 39 - 105, establishes the Civil Aviation Safety Authority's (CASA) schedule of airworthiness directives, which are critical in maintaining the safety standards of aircraft operations. One such directive, AD/JETSTREAM/74, addresses specific safety concerns for British Aerospace BAe 3100 (Jetstream) Series Aeroplanes. The policy objective is to rectify potential safety risks by mandating modifications to the autopilot system, ensuring that all affected Jetstream Series 3100 aeroplanes comply with the necessary safety standards. This directive was introduced to correct a previous typographical error and ensure the continued airworthiness of these aircraft by implementing mandatory modifications as specified by Jetstream Aircraft Ltd.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 – 105, apply to all Jetstream Series 3100 aeroplanes that are equipped with an autopilot system and have undergone specific modifications identified as JK3027, 3243, 3352, or 3483. These regulations are issued under the authority of the Civil Aviation Safety Authority (CASA) and have a national reach across Australia, ensuring compliance with safety standards mandated by the Commonwealth. This legislative instrument mandates the modification of autopilot systems in the specified aircraft by installing two additional relays and implementing the necessary wiring changes as detailed in Jetstream Aircraft Ltd Mandatory Service Bulletin 22-JK 2628 Revision 2 dated 21 October 1996. Compliance with these modifications must be achieved before 31 October 1997, unless the changes have already been completed. The directive becomes effective from 17 July 1997, rectifying a previous typographical error that misidentified the applicable modifications as starting with “JM” instead of “JK.” This ensures that operators adhere to the stringent safety requirements set forth by CASA to maintain the airworthiness of these aircraft.
Key Provisions
The Civil Aviation Regulations 1998 (Cth), Part 39 - 105, specifically AD/JETSTREAM/74 Amendment 1, pertains to the modification of autopilot trim relays in British Aerospace BAe 3100 (Jetstream) Series aeroplanes. This airworthiness directive (paragraph 1) applies to all Jetstream Series 3100 aeroplanes equipped with an autopilot installed under Jetstream Aircraft Ltd Modifications JK3027, 3243, 3352 or 3483. The directive requires the modification of the autopilot system by installing two additional relays and associated wiring changes in accordance with Jetstream Aircraft Ltd Mandatory Service Bulletin 22-JK 2628 Revision 2 dated 21 October 1996 (paragraph 2). This Service Bulletin was classified as Mandatory by the Civil Aviation Authority (UK). Compliance with this directive is required before 31 October 1997, unless the modifications have already been completed (paragraph 3). The directive became effective on 17 July 1997.
The obligations imposed by this legislation on the parties or entities it governs include ensuring that the specified modifications to the autopilot system are carried out in accordance with the detailed instructions provided in the Jetstream Aircraft Ltd Mandatory Service Bulletin 22-JK 2628 Revision 2. This includes the installation of the additional relays and the necessary wiring changes. Operators of Jetstream Series 3100 aeroplanes must verify that the modifications are completed before the deadline of 31 October 1997, unless the modifications have already been accomplished. Non-compliance with this directive could potentially compromise the airworthiness of the aircraft, leading to safety risks.
Failure to comply with this airworthiness directive could result in significant consequences. While the specific offences, penalties, or civil/criminal consequences are not detailed in the provided text, non-compliance with airworthiness directives generally can lead to severe regulatory actions. Such actions may include fines, grounding of the aircraft, and potential criminal charges if the non-compliance results in an accident or endangers flight safety. The Civil Aviation Safety Authority (CASA) has the authority to enforce these directives and can impose penalties as deemed appropriate under the Civil Aviation Act 1988 (Cth) and other relevant regulations.