COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Eurocopter BO 105 Series Helicopters
AD/BO 105/5 Tandem Hydraulic Units - Piston Rods 8/86
Applicability: All model BO 105 helicopters with less than 1200 hours total time in service fitted with Teledyne Hydra-Power tandem hydraulic units P/N 105-45021 with S/Nos: 1012, 1014 to 1019, 1021, 1023, 1027 to 1030, 1032, 1034, 1035, 1037, 1038, 1040,
1041, 1043 to 1046, 1049, 1056, 1057, 1062, 1064 to 1066, 1069, 1071, 1075, 1091,
1093, 1101, 1104, 1109, 1113, 1119, 1121, 1123, 1126, 1127, 1136, 1160 and 1161.
Requirement: Action in accordance with MBB SB 40-19, or SB 40-21.
Compliance: Inspect at 600 hours total time in service and again at 1200 hours total time in service. Background: Cracks have been found on piston rods of Teledyne Hydra-Power actuators. LBA AD
75-172/2 MBB also refers.
Overview
The Civil Aviation Regulations 1998, enacted by the Australian Government, were introduced to ensure the safety and efficiency of civil aviation within Australia. Part 39 - 105 of these regulations specifically pertains to airworthiness directives, with a focus on maintaining the safety standards of aircraft through various safety mandates. The problem addressed by this legislation includes the identification and management of safety risks associated with specific aircraft components, such as the tandem hydraulic units in the Eurocopter BO 105 Series Helicopters. This particular directive, AD/BO 105/5, targets the inspection and potential rectification of piston rod cracks in certain Teledyne Hydra-Power tandem hydraulic units, ensuring that these critical components are maintained to prevent potential in-flight failures. The objective is to mandate regular inspections and corrective actions to uphold the highest safety standards in civil aviation.
The legislative instrument F2006B04808, which is part of the Civil Aviation Regulations 1998, was developed by the Civil Aviation Safety Authority (CASA) to address identified safety issues with specific aircraft components. This directive specifically mandates inspections and necessary actions for Eurocopter BO 105 helicopters with certain Teledyne Hydra-Power tandem hydraulic units to prevent the occurrence of piston rod cracks, a known safety hazard. The policy objective is to ensure the continued airworthiness and safety of these aircraft by implementing a structured inspection and compliance regime.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, pertain to Eurocopter BO 105 Series Helicopters. This legislation applies to all model BO 105 helicopters with less than 1200 hours of total time in service that are equipped with specific Teledyne Hydra-Power tandem hydraulic units, identified by particular serial numbers. The primary focus of this regulation is to ensure the safety and airworthiness of these helicopters by addressing known issues with the hydraulic units, particularly the risk of cracks on piston rods. The requirement is for inspections and actions to be taken in accordance with MBB Service Bulletins 40-19 or 40-21, mandating inspections at 600 hours and again at 1200 hours of total time in service. This legislation is applicable nationally across Australia, governed under the Commonwealth of Australia, and is intended to maintain high safety standards within the aviation industry. The regulation does not explicitly state any exclusions or exemptions, and its application may be further detailed through subordinate instruments.
Key Provisions
The Civil Aviation Regulations 1998, specifically under PART 39 - 105, include an airworthiness directive (AD) pertaining to Eurocopter BO 105 series helicopters. This AD (AD/BO 105/5) focuses on the tandem hydraulic units' piston rods and is applicable to certain model BO 105 helicopters with less than 1200 hours of total time in service, particularly those equipped with Teledyne Hydra-Power tandem hydraulic units with specific serial numbers. The requirement outlined in this AD is for the action to be taken in accordance with MBB Service Bulletins (SB) 40-19 or SB 40-21. Compliance with this directive involves inspecting the piston rods at two specific intervals: once at 600 hours of total time in service and again at 1200 hours.
Operators and owners of the affected helicopters must ensure that the inspections are conducted as specified by the AD. This entails following the procedures detailed in the relevant MBB Service Bulletins, which are intended to address and rectify potential cracks found on the piston rods of the mentioned hydraulic units. The inspections are critical to maintaining the airworthiness of these helicopters and ensuring safety during flight operations.
Failure to comply with the AD/BO 105/5 could result in serious safety implications, as the directive aims to mitigate risks associated with the identified issue. Non-compliance may also lead to regulatory action, including potential enforcement measures by the Civil Aviation Safety Authority (CASA). While the regulations do not explicitly state penalties for non-compliance in this context, the overarching Civil Aviation Act 1988 and Civil Aviation Regulations 1998 provide a framework under which CASA can take action, including fines and potential grounding of the aircraft until compliance is achieved. Such consequences underscore the importance of adhering to the airworthiness directives to ensure the safety and reliability of the aircraft in operation.