AD/CESSNA 177/20 - Landing Gear Hydraulic Line

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of the Commonwealth of Australia, form a comprehensive legal framework designed to ensure the safety and efficiency of civil aviation in Australia. One specific aspect of these regulations is detailed in Part 39 - 105, which pertains to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. This legislative instrument, specifically F2006B05014, addresses safety concerns related to the Cessna 177 Series Aeroplanes. The problem it was introduced to address is the potential failure of the landing gear hydraulic line, which could compromise the safety of these aircraft. The policy objective of this directive is to ensure compliance with the specified action to rectify this issue, thereby enhancing the overall safety standards in civil aviation. The directive requires all model 177RG aircraft with serial numbers ranging from 177RG0283 to 177RG0732 to implement the necessary action within 100 hours of time in service after 28 November 1975, in accordance with Cessna Service Letter No. SE75-14.

Scope and Application

The Civil Aviation Regulations 1998, as amended, mandate the application of specific Airworthiness Directives (ADs) to ensure the safety and airworthiness of certain aircraft models within Australian airspace. Under Part 39 - 105 of the Civil Aviation Regulations 1998, the AD/CESSNA 177/20 specifically targets all model 177RG Cessna aircraft with serial numbers ranging from 177RG0283 to 177RG0732. This directive necessitates compliance with the instructions outlined in Cessna Service Letter No. SE75-14, which pertains to the landing gear hydraulic line. Compliance with this directive is required within 100 hours of the aircraft’s time in service following 28 November 1975. The regulation applies to all aircraft falling within the specified serial number range, ensuring that these aircraft meet the necessary safety standards to operate within Australian jurisdiction. This directive underscores the importance of maintaining stringent safety protocols to safeguard both crew and passengers in the aviation sector.

Key Provisions

The primary operative sections of the Civil Aviation Regulations 1998 (CARs) concerning the Airworthiness Directives for Cessna 177 Series Aeroplanes are outlined in Part 39, specifically Section 39-105. This section mandates the necessity for certain aircraft models to adhere to specific safety directives, as illustrated by AD/CESSNA 177/20. The directive addresses the landing gear hydraulic line of all model 177RG Cessna aeroplanes with serial numbers ranging from 177RG0283 to 177RG0732. The requirement (Section 11/75) stipulates that action must be taken in accordance with Cessna Service Letter No. SE75-14, ensuring compliance within 100 hours of time in service after 28 November 1975. The Civil Aviation Regulations impose specific obligations on the parties and entities governed by these directives. Owners and operators of the affected Cessna 177RG aeroplanes are required to ensure that the mandated actions are performed as per the specified service letter. This includes conducting the necessary inspections, repairs, or replacements of the landing gear hydraulic line to maintain the airworthiness of the aircraft. The compliance timeframe is strict, and failure to adhere to the 100-hour service limit could result in the aircraft being deemed non-compliant, potentially leading to operational restrictions or grounding. Non-compliance with the Airworthiness Directives can result in serious legal and safety consequences. Under the Civil Aviation Act 1988, any person who contravenes the regulations can face penalties. The maximum penalty for non-compliance with these directives can include substantial fines and, in severe cases, imprisonment. Additionally, any failure to adhere to the specified maintenance actions can lead to civil penalties imposed by the Civil Aviation Safety Authority (CASA). These penalties are intended to enforce strict adherence to safety standards and ensure the continued safety and airworthiness of the affected aircraft.