COMMONWEALTH OF AUSTRALIA CIVIL AVIATION ORDERS CIVIL AVIATION SAFETY AUTHORITY PART 105 SCHEDULE OF AIRWORTHINESS DIRECTIVES
GULFSTREAM (GRUMMAN) G.159 SERIES AEROPLANES
AD/G159/44 Air Intake Cowling 2/90
Applicability: G159 series aircraft fitted with accoustically lined air intakes (“Hush Kits”) in accordance with Rolls Royce SB Da72-474 (Mod. 1800).
Requirement: Remove Mod. 1800 intakes from service in accordance with the requirements of Rolls Royce SB Da72-513.
Compliance: Effective 22 February 1990.
Background: The manafacturer has advised, service experience with the Mod. 1800 air intake indicates, the Gulfstream G1 aircraft electrical power supply may, in certain circumstances, be insufficient to cope with ice accumulation in the Mod. 1800 air intake. Accordingly, this Directive has been issued to require removal of the Mod. 1800 air intakes from Gulfstream G1 aircraft.
Overview
The Civil Aviation Orders, enacted in 1990 by the Australian Government through the Civil Aviation Safety Authority, address the need to ensure the safety and airworthiness of aircraft operating within Australia. This legislative instrument specifically targets the Gulfstream (Grumman) G.159 series aeroplanes, mandating adherence to Airworthiness Directives to mitigate identified safety risks. One such directive, AD/G159/44, pertains to the air intake cowlings of G159 series aircraft equipped with acoustically lined air intakes, commonly referred to as "Hush Kits." The directive responds to concerns raised by the manufacturer regarding potential electrical power supply issues that could arise from ice accumulation in the Mod. 1800 air intakes, which could compromise the aircraft's performance and safety. The directive requires the removal of these specific air intakes from service, aligning with the broader policy objective of maintaining stringent safety standards in civil aviation.
Scope and Application
The Civil Aviation Orders, specifically Part 105 Schedule of Airworthiness Directives, applies to the Gulfstream (Grumman) G159 series aeroplanes fitted with acoustically lined air intakes, commonly referred to as "Hush Kits." This legislative instrument mandates compliance with the requirements outlined in Rolls Royce Service Bulletin Da72-513, which addresses the removal of Mod. 1800 intakes from service. The directive is effective as of 22 February 1990 and is applicable nationwide, within the jurisdiction of the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority. The exclusion pertains solely to Gulfstream G159 series aircraft equipped with the specified acoustically lined air intakes. The mandate is clear and specific, leaving no room for interpretation, and is enforced uniformly across the designated aircraft fleet within Australia. Subordinate instruments may provide further clarification or detailed procedural guidance, but the primary directive remains as stated.
Key Provisions
The main operative sections of the Civil Aviation Order, specifically AD/G159/44, focus on the safety of the Gulfstream (Grumman) G.159 series aeroplanes. Section 105 of the Civil Aviation Orders mandates that Gulfstream G159 series aircraft fitted with acoustically lined air intakes (known as "Hush Kits") must comply with the directives provided. This directive, AD/G159/44, applies to aircraft fitted with Mod. 1800 intakes as outlined in Rolls Royce SB Da72-474. The requirement, as stated in section 2, is the removal of these Mod. 1800 intakes from service, in accordance with the instructions set forth in Rolls Royce SB Da72-513. This compliance directive became effective on 22 February 1990.
The obligations and requirements imposed by the Act on the parties or entities it governs include the immediate removal of the Mod. 1800 air intakes from service. Operators and owners of Gulfstream G159 series aircraft must follow the specific instructions detailed in Rolls Royce SB Da72-513 to ensure that these modifications are implemented correctly and safely. The directive mandates adherence to these procedures to prevent potential electrical power supply issues that could arise due to ice accumulation in the air intakes. Failure to comply with this directive could result in significant safety risks, including potential failure of the aircraft's electrical systems.
In terms of offences, penalties, or consequences for non-compliance, the Act does not explicitly detail the penalties within the provided text. However, the Civil Aviation Safety Authority (CASA) enforces compliance with Civil Aviation Orders and associated directives. Breaches of these orders can result in enforcement actions, which may include fines, suspension of airworthiness certificates, or other regulatory actions. The severity of penalties can vary based on the nature and extent of the breach, but the overarching objective is to ensure the safety and airworthiness of the aircraft in question. Non-compliance can lead to serious safety hazards, making it imperative for operators and owners to adhere strictly to the directives issued.