Commonwealth legislation

AD/G159/42 - Electrical Power Distribution Protection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD mandates that all Gulfstream G.159 (Grumman) aircraft be modified/inspected per Gulfstream Mandatory Aircraft Service Change No. 262, to be completed before 26 January 1990.

It addresses identified electrical‑protection deficiencies (APU generator sensing wiring, some generator feeders, and inverter protection) to provide fault protection. Owners/operators must arrange and fund the work, which requires qualified maintenance and may cause temporary downtime.

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AD/G159/42 - Electrical Power Distribution Protection

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COMMONWEALTH OF AUSTRALIA CIVIL AVIATION ORDERS CIVIL AVIATION SAFETY AUTHORITY PART 105 SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source GULFSTREAM (GRUMMAN) G.159 SERIES AEROPLANES

AD/G159/42 Electrical Power Distribution Protection 1/89

Applicability: All models.

Requirement: Action in accordance with Gulfstream Mandatory Aircraft Service Change No 262. Compliance: Prior to 26 January 1990.

Background: In all serial numbers of the G1, the APU generator output sensing wires are routed from the APU to the generator over-voltage protector without any circuit protection. Additionally, in some aircraft, the APU generator feeders themselves do not have circuit protection, and the inverter circuit protection currently provided is insufficient to protect the aircraft. This AD provides fault protection.

Source text

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