AD/CESSNA 320/14 - Engine Nacelle Wiring - Inspection

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Legislation au F2006B08192 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

 


Cessna 320 Series Aeroplanes

 

AD/CESSNA 320/14 Engine Nacelle Wiring - Inspection 6/71

Applicability: All models with S/Nos. 320-0001 to 320F-0045.

 

Requirement: 1. (a) Visually inspect the insulating material of the electrical wiring grommet and clamps located in the engine nacelles between the canted bulkhead and the firewall for charred, burnt or heat hardened condition.

 

(b) Visually inspect the heat shields located in the engine nacelles between the canted bulkhead and the firewall for deterioration or incorrect installation and attachment that could contribute to excessive heat in this area.

 

2.    If any of the conditions described in para. 1 are found during the required inspections, replace any defective parts with serviceable items.

 

3.    Modify the engine nacelles in accordance with Cessna SL ME71-6.

 

Compliance:   For Paras. 1 and 2 - Within 100 hours time in service after 30 July 1971 and thereafter at intervals not exceeding 100 hours time in service until modified in accordance with Para. 3.

 

For Para. 3 - Before 1 February 1972.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establish a regulatory framework designed to ensure the safety of civil aviation in Australia. One such regulation is AD/CESSNA 320/14, which pertains to the engine nacelle wiring inspection of Cessna 320 series aeroplanes. This Airworthiness Directive was enacted by the Civil Aviation Safety Authority to address potential safety hazards associated with the wiring and heat shields in the engine nacelles of these aircraft. The regulation mandates a thorough visual inspection of the insulating material and heat shields in the specified area to identify any signs of damage or incorrect installation that could lead to overheating. The objective is to ensure that any defective parts are replaced and the engine nacelles are modified as necessary to prevent safety risks. The directive aims to maintain the airworthiness of the aircraft by setting specific compliance timelines for inspections and modifications. Enacted by the Australian Parliament, the Civil Aviation Regulations 1998 serve as a comprehensive set of rules to safeguard civil aviation. AD/CESSNA 320/14 focuses on the Cessna 320 series aeroplanes, identifying and mitigating risks associated with the engine nacelle wiring and heat shields. This directive requires regular inspections and, if necessary, the replacement of defective parts to prevent overheating issues. By setting clear deadlines for compliance, the regulation ensures that all affected aircraft are maintained to a high safety standard. The policy objective is to enhance the safety and reliability of civil aviation operations in Australia.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the airworthiness directives for civil aviation safety in Australia, applying to all Cessna 320 Series Aeroplanes with serial numbers ranging from 320-0001 to 320F-0045. This legislation mandates a stringent inspection regime for the electrical wiring grommets and clamps in the engine nacelles, as well as the heat shields within the same area, to ensure they are in a safe, functional condition. The requirement stipulates that these components must be visually inspected for any signs of charring, burning, heat hardening, deterioration, or incorrect installation. If any defects are found, the defective parts must be replaced with serviceable items. Furthermore, the aircraft must be modified according to Cessna Service Letter ME71-6 before a specified deadline. The inspections must occur within 100 hours of time in service after a certain date and continue at intervals not exceeding 100 hours until the specified modifications are made. This regulation is enforced under the Commonwealth of Australia and applies nationally to ensure the safety standards of civil aviation are maintained.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998, specifically AD/CESSNA 320/14, address the inspection and maintenance of the engine nacelle wiring for Cessna 320 series aeroplanes. Section 1 mandates a visual inspection of the insulating material of the electrical wiring grommet and clamps, as well as the heat shields in the engine nacelles, to check for signs of charring, burning, or heat hardening, as well as deterioration or improper installation that could lead to excessive heat. Section 2 requires the replacement of any defective parts found during the inspection, while Section 3 mandates modifications to the engine nacelles in accordance with Cessna SL ME71-6. The obligations imposed by these provisions are clear and specific. Operators of Cessna 320 series aeroplanes must ensure that the visual inspections outlined in Section 1 are conducted meticulously. This involves checking for any signs of damage or improper installation of the electrical wiring and heat shields. If any issues are found, as stated in Section 2, the defective parts must be replaced with serviceable items. Additionally, Section 3 necessitates that the engine nacelles be modified in compliance with Cessna SL ME71-6 before a specified deadline. Failing to comply with these provisions can lead to serious consequences. Although the regulations do not explicitly detail penalties for non-compliance, breaches of the Civil Aviation Regulations 1998 can result in substantial penalties under the Civil Aviation Act 1988. Non-compliance can lead to civil penalties, including fines, and in severe cases, criminal charges. The specific penalties are determined by the severity of the breach and may include significant fines for corporations and potential imprisonment for natural persons involved in the breach.

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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.