AD/PA-18/12 Amdt 1 - Fuel Primer and Hydraulic Lines - Re-Routing

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Legislation au F2006B05391 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

 


Piper PA-18 and 19 (Super Cub) Series Aeroplanes

 

AD/PA-18/12

Amdt 1


Fuel Primer and Hydraulic Lines - Re-Routing 4/85 DM

 

Applicability: All models.

 

Requirement: 1. To prevent contact with the exhaust muffler, re-route fuel primer line, and wheel brake hydraulic line if necessary, to ensure that they do not pass behind the muffler.

 

2. Using clamps, secure the lines to the firewall - refer to Piper SL No. 213 for fuel primer line clamping instructions.

 

Note: FAA AD 53-24-4 refers.

 

Compliance: Within 25 hours time in service after 31 March 1985.

 

Background: This Directive has been amended to combine the intent of Piper SL No. 213 and FAA AD 53-24-4 into a single requirement. Re-routing, as applicable, of the fuel primer line and wheel brake hydraulic line is necessary to preclude the possibility of an in- flight fire.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, aim to ensure the safety of civil aviation and address any gaps in safety regulations. Part 39 - 105 of these regulations pertains to airworthiness directives, which are legally enforceable rules issued by the Civil Aviation Safety Authority (CASA) to correct an unsafe condition of an aircraft. This particular legislative instrument, F2006B05391, pertains to the Piper PA-18 and 19 (Super Cub) series aeroplanes and specifically addresses an airworthiness directive (AD/PA-18/12 Amendment 1) regarding the re-routing of the fuel primer line and hydraulic lines to prevent potential contact with the exhaust muffler, thus avoiding the risk of in-flight fires. The directive consolidates the requirements of Piper Service Letter No. 213 and FAA AD 53-24-4 into a single requirement, ensuring compliance within 25 hours of time in service after 31 March 1985. This amendment reflects CASA's commitment to maintaining the highest safety standards in civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, applies to all Piper PA-18 and 19 (Super Cub) Series Aeroplanes. The legislation mandates that all models must comply with Airworthiness Directives (AD) issued by the Civil Aviation Safety Authority (CASA) to ensure safety standards are met. The directive in question, AD/PA-18/12 Amendment 1, pertains to the re-routing of the fuel primer line and the wheel brake hydraulic line to prevent any contact with the exhaust muffler. This requirement is essential to mitigate the risk of in-flight fires, as outlined in Piper Service Letter No. 213 and Federal Aviation Administration AD 53-24-4. Compliance with these directives is mandatory, and the re-routing must be completed within 25 hours of time in service following 31 March 1985. Failure to adhere to these regulations can result in significant safety hazards, underscoring the importance of following these stipulated procedures.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically AD/PA-18/12 Amendment 1, require that for Piper PA-18 and 19 (Super Cub) series aeroplanes, the fuel primer line and the wheel brake hydraulic line must be re-routed to prevent any contact with the exhaust muffler. This re-routing is necessary to ensure that these lines do not pass behind the muffler, which could otherwise lead to an in-flight fire. In addition, these lines must be secured using clamps to the firewall, following the instructions provided in Piper Service Letter (SL) No. 213 for the fuel primer line. The re-routing and securing of these lines must be completed within 25 hours of time in service after 31 March 1985. The Civil Aviation Safety Authority (CASA) imposes obligations on the operators and owners of the affected Piper PA-18 and 19 series aeroplanes to ensure compliance with the Airworthiness Directive. This includes conducting the necessary modifications to the fuel primer line and wheel brake hydraulic line as specified, to prevent any contact with the exhaust muffler. The modifications must be carried out meticulously according to the instructions provided in Piper SL No. 213, and the lines must be secured using clamps to the firewall to maintain structural integrity and safety. CASA also requires that these modifications be completed within the stipulated timeframe of 25 hours of time in service after 31 March 1985, ensuring that the aircraft remain airworthy and compliant with safety standards. Failure to comply with the requirements set out in AD/PA-18/12 Amendment 1 can lead to serious consequences. The Civil Aviation Regulations 1998 outline potential civil and criminal penalties for non-compliance with airworthiness directives. Specifically, operators and owners who do not adhere to the specified modifications and timeframe may face fines and legal action. The severity of the penalties can vary, but the maximum fines can be substantial, reflecting the importance of adhering to safety regulations in civil aviation. Additionally, non-compliance can result in the grounding of the aircraft, which can have significant operational and financial impacts on the operators. In summary, AD/PA-18/12 Amendment 1 mandates specific modifications to the fuel primer line and wheel brake hydraulic line of Piper PA-18 and 19 series aeroplanes to prevent contact with the exhaust muffler. Operators and owners must ensure these modifications are completed within 25 hours of time in service after 31 March 1985, in accordance with the instructions provided in Piper SL No. 213. Failure to comply with these requirements can result in significant civil and criminal penalties, highlighting the critical importance of adhering to airworthiness directives in maintaining the safety and operational standards of civil aviation in Australia.

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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.