Commonwealth legislation

AD/G1159/42 - DC Essential Bus Indication

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Commonwealth

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legislative instrument

Plain English Summary

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What this does: This airworthiness directive requires Gulfstream G‑IV aeroplanes (serials 1000–1359) to have a DC essential-bus indicator light and an audible tone fitted or certain DC wiring rerouted, depending on avionics configuration (SPZ 8400 present or not) and which ASC 327 variants are already installed. It mandates work to be done in accordance with Gulfstream Customer Bulletin 102B and specified ASC 327/327B modification instructions.

Who acts and pays: Aircraft operators must arrange and fund the prescribed installations or wiring changes and comply with the listed modification instructions within the compliance timing.

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AIRWORTHINESS DIRECTIVE

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AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

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Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes

AD/G1159/42 DC Essential Bus Indication

AD/G1159/42 DC Essential Bus Indication 8/2004

Applicability: Model G-IV series aeroplanes, serial numbers 1000 through 1359 inclusive. Requirement: 1. For aeroplanes equipped with the SPZ 8400 Digital Integrated Flight

Control System, accomplish the following, as applicable:

If the aeroplane has the production equivalent of Gulfstream IV Aircraft Service Change (ASC) 327, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B, dated 26 January 2004, together with Modification Instructions A, J through L, and P through S of Gulfstream IV ASC 327B, dated 26 January 2000.

b. If the aeroplane has Gulfstream IV ASC 327 installed, but not Gulfstream IV ASC 327A, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B; Modification Instructions A through H of Gulfstream GIV ASC 327B Am2, dated 26 January 2004; and Modification Instruction P of Gulfstream IV ASC 327B.

Note 1: Modification Instruction E in Gulfstream GIV ASC 327B Am2 is the same as Modification Instruction P in Gulfstream IV ASC 327B.

c. If the aeroplane has Gulfstream IV ASC 327A installed, ensure that all ground wires from connectors 95A1P2B and 95A2P2B are removed or rerouted in accordance with Gulfstream GIV Customer Bulletin 102B and Figure 6 of Gulfstream IV ASC 327B.

2. For aeroplanes not equipped with the SPZ 8400, accomplish the following, as applicable:

If the aeroplane does not have Gulfstream IV ASC 327 installed, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B; together with Modification Instructions A, B through I, and P through S of Gulfstream IV ASC 327B.

b. If the aeroplane has Gulfstream IV ASC 327 installed, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B, together with Modification Instructions A, M through O, and P through S of Gulfstream IV ASC 327B.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes

AD/G1159/42 DC Essential Bus Indication AD/G1159/42 DC Essential Bus Indication 8/2004

AD/G1159/42 DC Essential Bus Indication 8/2004

Applicability: Model G-IV series aeroplanes, serial numbers 1000 through 1359 inclusive. Requirement: 1. For aeroplanes equipped with the SPZ 8400 Digital Integrated Flight

Control System, accomplish the following, as applicable:

If the aeroplane has the production equivalent of Gulfstream IV Aircraft Service Change (ASC) 327, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B, dated 26 January 2004, together with Modification Instructions A, J through L, and P through S of Gulfstream IV ASC 327B, dated 26 January 2000.

b. If the aeroplane has Gulfstream IV ASC 327 installed, but not Gulfstream IV ASC 327A, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B; Modification Instructions A through H of Gulfstream GIV ASC 327B Am2, dated 26 January 2004; and Modification Instruction P of Gulfstream IV ASC 327B.

Note 1: Modification Instruction E in Gulfstream GIV ASC 327B Am2 is the same as Modification Instruction P in Gulfstream IV ASC 327B.

c. If the aeroplane has Gulfstream IV ASC 327A installed, ensure that all ground wires from connectors 95A1P2B and 95A2P2B are removed or rerouted in accordance with Gulfstream GIV Customer Bulletin 102B and Figure 6 of Gulfstream IV ASC 327B.

2. For aeroplanes not equipped with the SPZ 8400, accomplish the following, as applicable:

If the aeroplane does not have Gulfstream IV ASC 327 installed, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B; together with Modification Instructions A, B through I, and P through S of Gulfstream IV ASC 327B.

b. If the aeroplane has Gulfstream IV ASC 327 installed, install the new indicator light and the audible tone, in accordance with Gulfstream GIV Customer Bulletin 102B, together with Modification Instructions A, M through O, and P through S of Gulfstream IV ASC 327B.