AD/AMD 50/11 - Engine Exhaust Duct Clamps

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B02378 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


AMD Falcon 50 and 900 Series Aeroplanes

 

AD/AMD 50/11 Engine Exhaust Duct Clamps 3/96

Applicability: Model Mystere-Falcon 50 series aircraft serial numbers 2 through 216; equipped with engine exhaust duct attachment clamps part number (P/N) NH1002299-10 or NH1007763-10.

 

Requirement: 1. For aircraft equipped with clamps P/N NH1002299-10, remove, discard and install exhaust duct attachment clamps in accordance with the technical requirements of Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1.

 

2. For aircraft equipped with attachment clamps P/N NH1007763-10, remove, inspect and install exhaust duct attachment clamps in accordance with the technical requirements of Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1.

 

Note: FAA AD 94-14-15 and DGAC AD 93-113-013(B) refer.

 

Compliance: 1. Prior to 1 April 1996.

 

2. Unless previously accomplished, prior to 1 June 1996.

 

Background: The manufacturer has advised of the possibility of cracks occurring in the engine exhaust clamps due to fatigue. This Directive mandates the replacement of existing clamps with reinforced clamps which have larger section bands and improved clamp resistance.

 

The manufacturer has further advised that some reinforced clamps have been stamped with the incorrect torque value, therefore this Directive mandates inspection of the clamping screw and engraved marking on the reinforced clamp.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically under Part 39, establish the framework for ensuring the safety of civil aviation operations within Australia. This piece of legislation was enacted to address the need for stringent regulatory oversight of civil aviation safety, ensuring that all aircraft meet specific airworthiness standards. The Civil Aviation Regulations were introduced by the Parliament of Australia, aiming to uphold the highest safety standards in the aviation industry, thereby protecting the public and ensuring the reliability of air travel. One notable directive under this regulation is the Airworthiness Directive concerning the AMD Falcon 50 and 900 series aeroplanes, which aims to mitigate risks associated with potential fatigue-induced cracks in engine exhaust duct clamps by mandating their replacement or inspection. This directive underscores the commitment to maintaining the structural integrity of aircraft, thereby safeguarding against potential safety hazards.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, outlines the requirements for the maintenance and airworthiness of aircraft, including the AMD Falcon 50 and 900 series aeroplanes. This legislation applies to specific models of the Mystere-Falcon 50 series aircraft, namely those with serial numbers ranging from 2 to 216, and equipped with particular engine exhaust duct attachment clamps. The regulation mandates that operators of these aircraft must either remove and replace specified clamps or inspect and replace them in accordance with Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1, depending on the specific part number of the clamps installed. The directive is designed to address potential fatigue-related cracking of the exhaust duct attachment clamps, ensuring the continued safety and airworthiness of the affected aircraft. Compliance with these directives is required either prior to April 1, 1996, or, if not already completed, by June 1, 1996.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes the Civil Aviation Safety Authority's Schedule of Airworthiness Directives which covers various safety measures for aircraft. Within this, AD/AMD 50/11 pertains to the engine exhaust duct clamps for Falcon 50 and 900 series aeroplanes. The directive applies to Mystere-Falcon 50 series aircraft with specific serial numbers (2 through 216) equipped with certain part numbers of engine exhaust duct attachment clamps (P/N NH1002299-10 or NH1007763-10). Aircraft owners or operators must follow the directive's requirements to ensure compliance. For aircraft equipped with clamps P/N NH1002299-10, the directive mandates the removal and discarding of the existing clamps, followed by the installation of new clamps in accordance with the technical requirements of Dassault Aviation Service Bulletin F50-229 (F50-54-13) Revision 1. For those equipped with clamps P/N NH1007763-10, the directive requires the removal, inspection, and reinstallation of the clamps, again following the same technical requirements. These measures aim to address potential fatigue-related cracks in the engine exhaust clamps and to correct any inaccuracies in torque values stamped on the reinforced clamps. Failure to comply with these directives can result in serious safety hazards. The regulations impose obligations on the aircraft owners or operators to ensure that the specified modifications are completed by specific dates: prior to 1 April 1996 for some aircraft, and unless previously accomplished, prior to 1 June 1996 for others. Non-compliance with these deadlines could lead to penalties or legal consequences. The regulations do not explicitly state the penalties for non-compliance, but breaches of Civil Aviation Regulations can generally result in civil or criminal penalties. Civil penalties can include fines, while criminal penalties might include imprisonment, reflecting the seriousness of ensuring aviation safety. The exact penalties would depend on the specific breach and the applicable laws.

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Aviation Law
Instrument
Regulation
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Definitions & Interpretation
Compliance Obligations
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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.