Airworthiness Directives 2004 - Revocation and Remaking - Gates Learjet 24 & 25 Series Aeroplanes

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Legislation au F2006B07878 In force Legislative Instrument

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 Airworthiness Directives 2004

 I, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety

 Authority, acting under subregulation 39.001 (1) of the Civil

 Aviation Safety Regulations 1998:

 (a) revoke the Airworthiness Directives mentioned in

 Schedule 1; and

 (b) make, as separate instruments, each Airworthiness

 Directive mentioned in Schedule 1 and attached.

 

 

 David Villiers

 Delegate of the Civil Aviation Safety Authority

 

  20 December 2004

 Note:   Each attached Airworthiness Directive is being re-made in exactly the

 same form as appears in the latest published edition of the Directive.

 


 Schedule 1 Revocation and Remaking of

 Airworthiness Directives

 Gates Learjet 24 & 25 Series Aeroplanes

 AD Name AD Number

 Horizontal Stabiliser - Inspection AD/LEARJET/1

 Spoiler Actuator Attachment Bolts - Replacement AD/LEARJET/2

 Rudder Pedal Heel Plates - Inspection AD/LEARJET/3

 Tip Tank Fuel Pressure Relief - Modification AD/LEARJET/4

 Airspeed - Machmeter Indicator  Presentation - Modification AD/LEARJET/5

 Wing Flap System - Inspection AD/LEARJET/6

 Emergency Exit Window, Seat-Back Operating Instruction Placard -  AD/LEARJET/7

 Main Landing Gear Upper Strut - Inspection AD/LEARJET/8

 Spoiler Actuator Bracket And  Bushing - Inspection AD/LEARJET/9

 Spoiler Centre Hinge Brackets - Inspection AD/LEARJET/10

 Lower Cabin Door Jamb - Inspection AD/LEARJET/11

 Control System Stop Bolts - Replacement AD/LEARJET/12

 Spoiler System - Inspection AD/LEARJET/13

 Upper Cabin Door Locking Mechanism -Inspection And Modification AD/LEARJET/14 Amdt 1

 Refrigeration System Condenser Fan - Inspection and Replacement AD/LEARJET/15

 Secondary Yaw Damper Servo Cable Clamp Bolt - Inspection AD/LEARJET/16

 Cabin Altitude Pressure Limiter - Installation AD/LEARJET/17 Amdt 1

 Stall Warning System - Adjustment And Test AD/LEARJET/18

 Aileron Lower Skin - Inspection AD/LEARJET/19

 Upper Cabin Door Lock Mechanism  Bolts - Modification AD/LEARJET/20

 Aft Engine Beam - Inspection AD/LEARJET/21

 Aft Engine Beam Pylon Bolts - Inspection AD/LEARJET/22

 Tailcone Service Area - Inspection AD/LEARJET/23 Amdt 1

 Automatic Flight Controls Systems - Inspection and Modification AD/LEARJET/24

 Automatic Flight Control System - Deactivation and Modification AD/LEARJET/25

 Flight Manual - Change To Metric Units AD/LEARJET/26

 Horizontal Stabiliser Hinge Pin Bushing Installation - Inspection AD/LEARJET/27

 Automatic Flight Control Systems - Inspection and Modification AD/LEARJET/28

 Aileron Trim Tab Balance Weight - Replacement AD/LEARJET/29


 Flap System and Flap Sector Mounting Brackets AD/LEARJET/30 Amdt 2

 Handling Qualities and rodynamic Stall Characteristics - Modification AD/LEARJET/31

 Battery Vent System AD/LEARJET/32 Amdt 2

 Stall Warning Accelerometer AD/LEARJET/33

 Flap Attachment Fittings AD/LEARJET/34

 Crew Oxygen Plumbing and Map Light Wire Protection AD/LEARJET/35

 Tip Tank Flapper Valves AD/LEARJET/36

 Outflow/Safety Valve AD/LEARJET/37

 Main Landing Gear Tyre AD/LEARJET/38

 

Overview

The Airworthiness Directives 2004, enacted by David Alan Villiers, the delegate of the Civil Aviation Safety Authority (CASA), under the authority of subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998, addresses the need to update and re-issue various airworthiness directives concerning specific models of aircraft, namely the Gates Learjet 24 & 25 Series Aeroplanes. This legislative instrument aims to revoke the existing airworthiness directives listed in Schedule 1 and re-issue them as separate instruments to ensure compliance with the most current safety standards and operational requirements. By doing so, the legislation seeks to maintain the highest standards of airworthiness, thereby enhancing the safety of civil aviation operations in Australia.

Scope and Application

The Airworthiness Directives 2004, issued under the authority of the Civil Aviation Safety Regulations 1998, apply to specific Gates Learjet 24 & 25 Series Aeroplanes. This legislative instrument, enacted by David Alan Villiers as the delegate of the Civil Aviation Safety Authority, revokes and re-makes certain Airworthiness Directives aimed at ensuring the airworthiness of these aircraft. The scope of the Act encompasses detailed directives related to various components of the aircraft, including inspections, modifications, and replacements of parts such as the horizontal stabilizer, rudder pedals, fuel pressure relief systems, and more. The directives are nationally applicable across Australia, ensuring uniformity in safety standards across the Commonwealth. Each Airworthiness Directive is meticulously re-made to match the latest published editions, thereby maintaining updated safety protocols. The legislation does not explicitly state exclusions or exemptions but is targeted at maintaining compliance with stringent aviation safety standards. The Act's application may be extended or further defined through subordinate instruments, ensuring that the regulations remain current and relevant to evolving safety requirements.

Key Provisions

The Airworthiness Directives 2004 (F2006B07878) are an important legislative instrument under the Civil Aviation Safety Regulations 1998. Specifically, sections (a) and (b) of the instrument focus on the revocation of existing Airworthiness Directives for certain aircraft models and their subsequent re-making in their latest form. These directives, listed in Schedule 1, pertain to the Gates Learjet 24 & 25 Series Aeroplanes and cover a wide range of maintenance and safety checks, modifications, and replacements. Each directive is given a unique identifier (e.g., AD/LEARJET/1 for the Horizontal Stabiliser Inspection) and is accompanied by detailed instructions to ensure compliance with airworthiness standards. The obligations imposed by this legislation are primarily directed at aircraft operators, maintenance personnel, and other relevant parties who must adhere to the specific requirements outlined in the Airworthiness Directives. These requirements include regular inspections, necessary modifications, and replacements of parts as specified. For example, AD/LEARJET/1 mandates an inspection of the horizontal stabiliser, while AD/LEARJET/3 requires the replacement of spoiler actuator attachment bolts. Compliance with these directives is critical for maintaining the safety and airworthiness of the affected aircraft. Failure to comply can lead to significant safety risks and potential non-compliance with aviation safety regulations. The Airworthiness Directives 2004 also establish serious consequences for non-compliance. Any breach of these directives can result in both civil and criminal penalties. The specific consequences depend on the severity and nature of the breach. For instance, an operator failing to conduct a required inspection or modification could face fines, suspension of their operating certificate, or even criminal charges in cases of gross negligence leading to accidents. The maximum penalties can be substantial, reflecting the importance of adhering to these safety directives. Operators and maintenance personnel must therefore ensure strict compliance to avoid these serious repercussions.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.