Commonwealth legislation

AD/JETSTREAM/74 Amdt 1 - Autopilot Trim Relays

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

The directive requires owners/operators of British Aerospace Jetstream 3100 aeroplanes with autopilots installed under modifications JK3027, 3243, 3352 or 3483 to install two additional autopilot trim relays and associated wiring per Jetstream Mandatory Service Bulletin 22-JK 2628 Rev 2. The Civil Aviation Safety Authority mandates compliance by 31 October 1997. Operators bear the cost and downtime for the modification; once done the previous 800‑hour life limit on the pitch relays is removed.

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Current sections

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AD/JETSTREAM/74 Amdt 1 - Autopilot Trim Relays

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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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.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/JETSTREAM/74 Amdt 1 - Autopilot Trim Relays