AD/HU 269/27 Amdt 1 - Lower Coupling Drive Shaft - Inspection

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority, were enacted to ensure the safety and regulation of civil aviation in Australia. These regulations are essential for maintaining high standards in the operation and maintenance of aircraft to protect the public and promote efficient air travel. One specific amendment within these regulations, AD/HU 269/27 Amendment 1, addresses the inspection of the lower coupling drive shaft for Schweizer (Hughes) 269 Series Helicopters. This directive was introduced to mitigate potential safety risks associated with the lower coupling drive shaft, ensuring that these helicopters continue to meet airworthiness standards. The amendment applies to specific models and serial numbers of the Schweizer (Hughes) 269 Series, requiring inspections within specified timeframes to ensure compliance and maintain the safety of these aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically under PART 39 - 105, govern the safety standards for civil aviation in Australia, with the Civil Aviation Safety Authority (CASA) being the enforcing body. This legislative instrument, AD/HU 269/27 Amendment 1, pertains to the inspection of the lower coupling drive shaft for Schweizer (Hughes) 269 Series Helicopters. This applies to specific models and serial numbers, including Model 269A (serial numbers 0011 through 0893), Model 269A-1 (serial numbers 0001 through 0041), Model 269A-2 (serial numbers 0001 and 0002), and Model 269B (serial numbers 0001 through 0359). The directive mandates inspections within 25 hours of time in service post 4 November 1968 for installed shafts, and before installation for new replacement shafts manufactured after this date. The regulations are applicable across the Commonwealth of Australia and extend their reach to ensure compliance with safety standards for specified helicopter models, with no exclusions or exemptions mentioned in the provided text. The application of these regulations can be further detailed or extended through subordinate instruments issued by CASA.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, establishes the Civil Aviation Safety Authority Schedule of Airworthiness Directives for Schweizer (Hughes) 269 Series Helicopters (Section 2). This directive, AD/HU 269/27 Amendment 1, pertains to the inspection of the Lower Coupling Drive Shaft for certain models of these helicopters. The applicable models include the 269A with serial numbers 0011 through 0893, the 269A-1 with serial numbers 0001 through 0041, the 269A-2 with serial numbers 0001 and 0002, and the 269B with serial numbers 0001 through 0359 (Section 3). The compliance requirements necessitate inspections within 25 hours of time in service after 4 November 1968 for installed shafts and prior to installation for new replacement shafts on these specified models (Section 4). The obligations and requirements imposed by this directive are straightforward yet critical for maintaining the safety and airworthiness of the specified helicopter models. Operators of these aircraft must ensure that the Lower Coupling Drive Shaft is inspected according to the stipulated timeframes. This involves either inspecting existing shafts within 25 hours of service after the effective date of 4 November 1968 or inspecting new replacement shafts before they are installed on a helicopter following the same date. These inspections must be conducted in accordance with the specifications outlined in Hughes SIN No. N-55.1 or FAA AD 68-26-1 (Section 5). Failure to comply with these requirements can result in significant safety risks and may lead to the aircraft being deemed unairworthy. The breach of these obligations can have serious legal and safety repercussions. While the regulations do not explicitly state the specific offences or penalties for non-compliance in this particular directive, general provisions within the Civil Aviation Act 1988 and Civil Aviation Regulations 1988 outline potential consequences for non-compliance with airworthiness directives. Such consequences could include administrative penalties, enforcement actions, and in severe cases, criminal charges. The maximum penalties for non-compliance with airworthiness regulations can include substantial fines and, in cases of willful or gross negligence, imprisonment. These stringent measures are in place to ensure that the highest standards of safety and compliance are maintained in the operation of civil aircraft.