Airworthiness Directives 2004 - Revocation and Remaking - Lycoming Piston Engines

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Legislation au F2006B07918 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

 Lycoming Piston Engines

 AD Name AD Number

 Centre Main Through Studs Re-Torqueing - CANCELLED AD/LYC/1 Amdt 1

 Cast Counterweight - Replacement - CANCELLED AD/LYC/2

 Intercylinder Baffle Clamps - Replacement or Modification AD/LYC/3

 Cylinder Head P/N 73114 - Cracking - CANCELLED AD/LYC/4 Amdt 1

 Piston P/N 71594 - Replacement - CANCELLED AD/LYC/5

 Installation of Modified Hydraulic Tappet Body and Plunger Assemblies -  AD/LYC/6 Amdt 2

 Propeller Shaft Oil Seal Ring - Inspection and Modification - CANCELLED AD/LYC/7

 Exhaust Valve Guide - Inspection - CANCELLED AD/LYC/8 Amdt 1

 Intake Hose Clamps - Replacement - CANCELLED AD/LYC/9

 Superseded by AD/LYC/15 - CANCELLED AD/LYC/10

 Oil Pump Drive Shaft - Inspection and Replacement - CANCELLED AD/LYC/11

 Crankshaft Counterweight Bushings - Inspection and Replacement -  AD/LYC/12 Amdt 2

 Magneto Drive Gear Cushion Retainer - Replacement - CANCELLED AD/LYC/13

 Fuel and Oil Vent Restriction For A.C Lightweight Diaphragm Fuel Pumps -  AD/LYC/14

 Connecting Rod - Replacement - CANCELLED AD/LYC/15 Amdt 4

 Crankshaft Propeller Flange - Inspection - CANCELLED AD/LYC/16

 Diaphragm - Fuel Injector  Modification - CANCELLED AD/LYC/17 Amdt 2

 Connecting Rods - Replacement - CANCELLED AD/LYC/18

 Magneto Rotor Shaft Nut - Inspection - CANCELLED AD/LYC/19 Amdt 1

 Crankshaft Idler Gear Shafts - Replacement - CANCELLED AD/LYC/20

 AC Oil Filter Adapter Gasket - Replacement - CANCELLED AD/LYC/21

 Connecting Rod Bolt - Replacement - CANCELLED AD/LYC/22

 Supercharger Air Inlet Housing Assembly Inspection - CANCELLED AD/LYC/23

 Increased Torque for Connecting Rod Bolt P/N 74644 - CANCELLED AD/LYC/24

 Reduction Gear Assembly - Inspection and Modification - CANCELLED AD/LYC/25

 Turbine Housing - Inspection - CANCELLED AD/LYC/26

 Fuel Line Heat Shield - Inspection - CANCELLED AD/LYC/27

 Main Bearing Retention and Oil Filter - Inspection - CANCELLED AD/LYC/28 Amdt 2

 Exhaust Manifold Couplings - Replacement - CANCELLED AD/LYC/29


 Carburettor Throttle Arm Screw - Retorque and Locking - CANCELLED AD/LYC/30

 Fuel Line - Inspection and Clamp Installation - CANCELLED AD/LYC/31 Amdt 1

 Crankcase Bearing Dowel - CANCELLED AD/LYC/32 Amdt 2

 Crankcase Bearing Dowel - Replacement - CANCELLED AD/LYC/33 Amdt 1

 Limited Travel Valve Lifter - Replacement - CANCELLED AD/LYC/34

 Cylinder Assemblies - Life Limits - CANCELLED AD/LYC/35 Amdt 1

 Turbocharger Exhaust System - Inspection and  Modification - CANCELLED AD/LYC/36

 Mandatory Replacement of Parts During Reconditioning - CANCELLED AD/LYC/37 Amdt 6

 7/16 inch Exhaust Valves and Guides - Retirement - CANCELLED AD/LYC/38

 Crankshaft Counterweight - Inspection and Replacement - CANCELLED AD/LYC/39

 Fuel Line - Inspection and Clamp Installation - CANCELLED AD/LYC/40

 Connecting Rod - Replacement - CANCELLED AD/LYC/41

 Turbocharger Housing - Inspection and Replacement - CANCELLED AD/LYC/42

 Turbocharger Oil Line Reducer Bushing - Replacement - CANCELLED AD/LYC/43

 Oil Pressure Filter - Inspection and Cover  Modification - CANCELLED AD/LYC/44 Amdt 1

 Connecting Rod - Inspection - CANCELLED AD/LYC/45 Amdt 2

 Piston Pin P/N 69650 - Inspection - CANCELLED AD/LYC/46 Amdt 4

 Turbocharger Density Controller - CANCELLED AD/LYC/47 Amdt 5

 Connecting Rod High Tensile Bolts and High- Crush Bearings - Introduction -  AD/LYC/48

 CANCELLED - AD/LYC/73 refers. - CANCELLED AD/LYC/49 Amdt 2

 Strengthened Connecting Rod Bolt - CANCELLED AD/LYC/50

 Fuel Flow Divider Gasket - Inspection and/or Replacement - CANCELLED AD/LYC/51

 Wastegate Valve Housing - Inspection - CANCELLED AD/LYC/52

 Turbocharger - Modification - CANCELLED AD/LYC/53

 Turbine Housing - Inspection - CANCELLED AD/LYC/54

 Tappet Body - Inspection and Replacement - CANCELLED AD/LYC/55

 Valve Rocker Arm Retaining Stud - Replacement - CANCELLED AD/LYC/56 Amdt 2

 Connecting Rod Cap and Bolt - Modification and Torque Increase - CANCELLED AD/LYC/57

 Crankshaft Replacement - CANCELLED AD/LYC/58 Amdt 1

 Oil Pump - Inspection and Gear Replacement - CANCELLED AD/LYC/59

 Hydraulic Tappet Replacement - CANCELLED AD/LYC/60

 Fuel Pump to Fuel Injector Line - Replacement - CANCELLED AD/LYC/61

 Fuel Injector Bellows Type Body Seal - Replacement - CANCELLED AD/LYC/62

 Fuel Injector Diaphragm Part Number 2529471 - Inspection - CANCELLED AD/LYC/63 Amdt 1

 Carburettor Economiser Channel - Fitment of Brass Plug - CANCELLED AD/LYC/64

 Fuel Injector Diaphragm Part Number 2529293 - Inspection - CANCELLED AD/LYC/65


 Turbocharger Oil Drain Flange - Replacement - CANCELLED AD/LYC/66

 Upper Exhaust Valve Spring Retainer - Inspection - CANCELLED AD/LYC/67

 Crankshaft Flange Bolts - Replacement and Torque - CANCELLED AD/LYC/68

 Upper Exhaust Spring Seat and Hydraulic Lifter - Replacement - CANCELLED AD/LYC/69

 Exhaust Valve Inspection - Helicopter Engines - CANCELLED AD/LYC/70

 Pushrod - Inspection AD/LYC/71 Amdt 1

 Turbocharger Inspection and Plumbing Replacement - CANCELLED AD/LYC/72

 Oil Pump Impellers - Replacement - CANCELLED AD/LYC/73 Amdt 2

 Oil Pump Impellers - Replacement - CANCELLED AD/LYC/74

 Crankshaft Re-Nitriding - CANCELLED AD/LYC/75

 Propeller Attachment Flange AD/LYC/76 Amdt 6

 Bendix Fuel Injection System, Diaphragm Type-Inspection - CANCELLED AD/LYC/77 Amdt 2

 Thermostatic Oil Cooler Bypass Valve AD/LYC/78 Amdt 5

 Cylinder Assembly - CANCELLED AD/LYC/79 Amdt 1

 Turbocharger Oil Inlet Adaptor Bushing AD/LYC/80

 Oil Pump Impellers AD/LYC/81 Amdt 3

 Cylinder Base Stud/Through Bolt Nut Torque - CANCELLED AD/LYC/82

 Crankshaft Flange AD/LYC/83

 Engine Driven Fuel Pump - CANCELLED AD/LYC/84

 Exhaust Assembly AD/LYC/85 Amdt 1

 Propeller Governor Oil Line AD/LYC/86 Amdt 2

 Challenger Engineering Chrome Plated Cylinder  Barrels AD/LYC/87

 Weld Repair Crankcase Inspection - CANCELLED AD/LYC/88

 Crankshaft Gear AD/LYC/89 Amdt 3

 Fuel Injection Supply Lines AD/LYC/90

 Crankshaft Removal/Inspection AD/LYC/91

 Mandatory Replacement of Parts - CANCELLED AD/LYC/92

 Connecting Rods - CANCELLED AD/LYC/93

 ro Accessories Inc. Engine Driven Fuel Pumps - CANCELLED AD/LYC/94

 Turbocharger Density Controller Adjustment AD/LYC/95

 Unapproved Camshaft Repairs AD/LYC/96

 Connecting Rod Bolt Inspection AD/LYC/97

 Push Rod Inner Diameter Scoring AD/LYC/98

 Diaphragm Fuel Pumps AD/LYC/99

 Piston Pin  P/N LW-14077 AD/LYC/100

 Superior Cylinders AD/LYC/101 Amdt 1


 Crankshaft Internal Inspection AD/LYC/102 Amdt 2

 Slick Magneto Inspection AD/LYC/103

 Crankshaft Drive Gear Bolts AD/LYC/104

 Oil Filter Converter Plate Gasket AD/LYC/105 Amdt 1

 RYCO R14 Oil Filters AD/LYC/106

 Crankshaft Replacement AD/LYC/107 Amdt 2

 Crankshaft Material Inspection AD/LYC/108

 Crankshaft Gear Bolt AD/LYC/109 Amdt 2

 

Overview

The Airworthiness Directives 2004, enacted on 20 December 2004, were introduced by the delegate of the Civil Aviation Safety Authority, David Alan Villiers, under the authority of subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998. This legislative instrument revokes previously issued airworthiness directives and re-issues them to ensure the continuing safety and airworthiness of aircraft with Lycoming piston engines. The directives aim to address safety issues and compliance requirements identified with specific engine components, ensuring that aircraft operations meet the highest safety standards. The policy objective is to maintain and enhance aviation safety by providing clear, up-to-date directives for the maintenance and operation of these engines.

Scope and Application

The Airworthiness Directives 2004, issued by the Delegate of the Civil Aviation Safety Authority, primarily focus on the regulation of airworthiness standards for aircraft engines, specifically Lycoming Piston Engines. This legislative instrument applies to entities involved in the manufacture, maintenance, or operation of aircraft engines within Australia, ensuring compliance with safety standards set forth by the Civil Aviation Safety Authority. The directives are designed to enhance safety by mandating specific actions such as the replacement or inspection of engine components, thus directly affecting industries involved in aviation maintenance and operations. The directives cover a wide range of engine components and systems, providing detailed instructions for the inspection, modification, or replacement of parts to ensure airworthiness. While the primary jurisdiction of this legislation is national, it aligns with international standards set by the International Civil Aviation Organization. This legislation does not explicitly state exclusions or exemptions, but its applicability is inherently limited to the specific components and systems detailed within the directives. Any further clarification or extension of application is typically addressed through subordinate instruments or amendments issued by the Civil Aviation Safety Authority.

Key Provisions

The Airworthiness Directives 2004, issued by the delegate of the Civil Aviation Safety Authority (CASA), David Alan Villiers, under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998, primarily serve to revoke certain existing Airworthiness Directives and to remake them as separate instruments. These directives, listed in Schedule 1, pertain specifically to Lycoming Piston Engines and involve a series of changes, replacements, and inspections that must be undertaken to ensure the airworthiness of the aircraft engines. The main operative sections of the Airworthiness Directives 2004 involve the revocation of several directives (sections 1(a)) and the remaking of others (section 1(b)). The obligations imposed by these directives are significant and are aimed at ensuring that all relevant aircraft components are maintained or replaced in accordance with the specified guidelines. For example, operators and owners of aircraft with Lycoming Piston Engines must ensure that parts such as the crankshaft counterweight, cylinder head, pistons, and various other engine components are inspected, replaced, or modified as required by the directives. This includes adhering to the specific part numbers and inspection protocols outlined in each directive. The directives also mandate that any modifications or repairs must be carried out by appropriately certified personnel and must comply with the CASA-approved maintenance schedules and procedures. Failure to comply with the Airworthiness Directives 2004 can result in severe consequences, both civil and criminal. Under the Civil Aviation Safety Regulations 1998, non-compliance with airworthiness directives can lead to enforcement actions by CASA, including the issuance of enforcement notices, fines, and other administrative penalties. In more serious cases, individuals or corporations found guilty of breaching these directives may face criminal charges, which could result in substantial fines and imprisonment. The specific penalties depend on the severity of the breach, the level of negligence involved, and the potential risk posed to aviation safety. It is crucial for all stakeholders to adhere strictly to these directives to avoid such 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.