AD/ENST 28/14 Amdt 1 - Upper Swashplate Bearing - Inspection and Lubrication

Overview

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, was enacted to ensure the safety and airworthiness of aircraft within Australian airspace. This legislation addresses the need for regular inspections and maintenance of aircraft components, particularly for the Enstrom F-28 Series Helicopters, to prevent potential mechanical failures that could compromise flight safety. The directive AD/ENST 28/14 Amendment 1 pertains to the upper swashplate bearing, requiring inspections and lubrication for helicopters manufactured before January 1981. This amendment aims to enforce the requirements of Enstrom Service Directive Bulletin No 0035 Revision A until the provisions of Enstrom Service Information Letter No 0110 Revision B are fully integrated. The policy objective is to maintain stringent safety standards and ensure compliance with international civil aviation safety regulations, overseen by the Australian Parliament and the Civil Aviation Safety Authority. The Australian Civil Aviation Regulations 1998, enacted by the Australian Parliament, aim to provide a comprehensive regulatory framework ensuring the safety and airworthiness of aircraft. This particular regulation, AD/ENST 28/14 Amendment 1, focuses on the inspection and lubrication of the upper swashplate bearing in Enstrom F-28 Series Helicopters manufactured prior to January 1981. The directive mandates compliance with Enstrom Service Directive Bulletin No 0035 Revision A until the Enstrom Service Information Letter No 0110 Revision B is incorporated, ensuring that these critical components are regularly maintained to prevent any potential mechanical failures. The overarching policy objective is to uphold high safety standards in line with international civil aviation safety regulations, overseen by the Civil Aviation Safety Authority.

Scope and Application

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, pertain to the airworthiness directives mandated by the Civil Aviation Safety Authority (CASA) to ensure the safety and compliance of aircraft within Australia. The regulations cover a broad spectrum of aircraft and their components, with a particular focus on ensuring that these meet the necessary safety standards. The legislative instrument F2006B09569 applies to all model F-28A, F-28C, F-28C-2, 280, and 280-C helicopters manufactured prior to January 1981, necessitating specific maintenance actions related to the upper swashplate bearing. The directive mandates that these helicopters be inspected and lubricated in accordance with Enstrom Service Directive Bulletin No 0035 Revision A, until the requirements of Enstrom Service Information Letter No 0110 Revision B are incorporated. Compliance is critical, requiring initial inspections within 10 hours of service from 22 July 1994, and subsequent reinspections at intervals not exceeding 100 hours of time in service until the aforementioned SIL is fully integrated. This Act underscores the importance of adhering to manufacturer guidelines to ensure the continued airworthiness and safety of these helicopters.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39, Section 105, outline the Civil Aviation Safety Authority's schedule of airworthiness directives for various aircraft, including the Enstrom F-28 Series Helicopters. Under this directive, AD/ENST 28/14 Amendment 1, the main focus is on the inspection and lubrication of the upper swashplate bearing. This directive applies to all model F-28A, F-28C, F-28C-2, 280 and 280-C helicopters manufactured prior to January 1981. The action required is in accordance with Enstrom Service Directive Bulletin No 0035 Revision A until the requirements of Enstrom Service Information Letter (SIL) No 0110 Revision B are incorporated. Notably, this directive references FAA AD 76-06-11 Amendment 39-2560, which in turn refers to Enstrom SB No 0035. Compliance with this directive is mandatory unless the helicopter has already been inspected in line with Enstrom Service Directive Bulletin No 0035 or 0035 Revision A. If not previously inspected, the action must be taken within 10 hours of time in service from 22 July 1994. Following the initial inspection, reinspection must occur at intervals not exceeding 100 hours of time in service until the requirements of Enstrom SIL No 0110 Revision B are incorporated. This directive is designed to ensure the safety and airworthiness of the specified helicopters by ensuring that the upper swashplate bearing is properly inspected and maintained. The obligations imposed by this directive are clear and require adherence to the specified inspection and lubrication procedures for the upper swashplate bearing of the affected helicopters. The primary obligation is to ensure that inspections and maintenance are conducted in accordance with the Enstrom Service Directive Bulletin No 0035 Revision A, and subsequently, in accordance with Enstrom SIL No 0110 Revision B. Operators and owners of the affected helicopters must ensure that the necessary inspections are performed within the stipulated timeframes and intervals to maintain compliance with the airworthiness directive. Failure to comply with the requirements of this directive can result in serious safety implications and potential legal consequences. While specific penalties are not detailed in the directive itself, non-compliance with airworthiness directives generally results in the aircraft being deemed unairworthy. This could lead to enforcement actions by the Civil Aviation Safety Authority, which may include fines, operational restrictions, or even the grounding of the affected aircraft. The maximum penalties for such breaches could include substantial fines and potential imprisonment for individuals or corporate entities found in violation of the regulations.