AD/CESSNA 400/14 - Wing Locker Fuel Tank Vent - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a critical part of Australia's civil aviation framework. They were introduced to ensure the safety and efficiency of civil aviation activities within Australia, thereby addressing the need for a comprehensive regulatory regime that governs all aspects of civil aviation operations. The regulations are administered by the Civil Aviation Safety Authority (CASA), with the overarching policy objective of maintaining the highest possible safety standards in civil aviation. This legislative instrument, specifically pertaining to Cessna 400 Series Aeroplanes, is part of the broader effort to ensure the airworthiness of aircraft and safeguard passengers and crew. The Cessna 400 Series Aeroplanes Airworthiness Directive (AD/CESSNA 400/14) targets a particular safety concern associated with the wing locker fuel tank vent of certain 421 series models. The directive applies to all 421 series aeroplanes with serial numbers below 421-0151 that are equipped with wing locker fuel tanks. Compliance with this directive is mandatory, requiring modifications to be completed within 100 hours of time in service after 23 March 1970. This directive is a specific instance of CASA's commitment to ensuring that all aircraft meet stringent safety criteria, thereby protecting the public and maintaining the integrity of civil aviation.

Scope and Application

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, establish the legal framework governing civil aviation safety in Australia. The referenced airworthiness directive AD/CESSNA 400/14 pertains to specific Cessna 421 series aeroplanes with serial numbers below 421-0151 that are fitted with wing locker fuel tanks. This directive applies to all such aircraft operating within the jurisdiction of the Commonwealth of Australia. Compliance with the directive is mandatory and must be achieved within 100 hours of time in service after the directive's issuance date of 23 March 1970. The directive mandates a modification to the wing locker fuel tank vent to ensure safety standards are met. This specific airworthiness directive exemplifies the regulatory approach taken to maintain high safety standards across the aviation industry within Australia. The directive does not explicitly mention any exclusions, exemptions, or thresholds, and its implementation is expected to be overseen by the Civil Aviation Safety Authority.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establish the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, focusing on the safety and airworthiness of aircraft. In this context, AD/CESSNA 400/14 addresses the wing locker fuel tank vent modification for certain Cessna 400 Series Aeroplanes. The directive applies to all 421 series aircraft with serial numbers (S/Nos.) below 421-0151 that are fitted with wing locker fuel tanks (Section 39-105). The document referenced is Cessna SL ME69-34, which outlines the required modifications. The primary requirement of this directive is that the specified modifications to the wing locker fuel tank vent must be completed within 100 hours of time in service after the directive's issuance date of 23 March 1970 (Section 39-105). Operators of affected aircraft must ensure that the modifications are carried out by qualified personnel, adhering to the instructions provided in the referenced document, Cessna SL ME69-34. Failure to comply with these modifications within the stipulated timeframe could result in the aircraft being deemed unairworthy. Operators of the affected Cessna 400 Series Aeroplanes are obligated to ensure that the specified modifications are completed as per the directive. This includes maintaining accurate records of the modifications carried out, including the date and the personnel responsible for the work. Operators must also ensure that the aircraft is not operated until the required modifications have been completed and verified by a CASA-approved maintenance organisation or individual. Compliance with these obligations is crucial to maintaining the airworthiness of the aircraft and ensuring the safety of all persons on board. Failure to comply with the requirements of AD/CESSNA 400/14 may result in serious consequences. CASA has the authority to take enforcement action against operators who fail to comply with Airworthiness Directives. This may include grounding the aircraft, imposing fines, and, in severe cases, prosecuting individuals or entities for breaches of the Civil Aviation Act 1988. The maximum penalties for such breaches can include substantial fines and imprisonment, reflecting the critical importance of ensuring the safety and airworthiness of aircraft. Therefore, it is imperative that operators of affected aircraft take the directive seriously and ensure full compliance within the specified timeframe.