AD/CON/57 Amdt 1 - Oil Scavenge Pump Gears

Overview

The Civil Aviation Regulations 1998, as amended by F2006B08637, address issues pertaining to the airworthiness of Teledyne Continental Motors piston engines, specifically targeting the oil scavenge pump gears. This legislative instrument, enacted by the Australian Government, was introduced to ensure safety and reliability in aviation operations by mandating the replacement of certain scavenge pump gears in specified engine models. The policy objective is to mitigate risks associated with the integrity of these gears, which could potentially compromise engine performance and safety. Compliance with these directives is mandatory and must be achieved within 500 hours of time in service or at the next access to the affected parts, whichever occurs first. This amendment reflects ongoing concerns and aligns with corresponding directives issued by the Federal Aviation Administration, ensuring a consistent approach to engine safety across jurisdictions.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 106 Civil Aviation Safety Authority Schedule of Airworthiness Directives, addresses the replacement of scavenge pump gears in Teledyne Continental Motors Piston Engines, including models TSIO-520B, BB, D, DB, E, EB, J, JB, K, KB, N, NB, UB and VB, as detailed in TCM Service Bulletin M90-6. The directive applies to operators and owners of aircraft equipped with the specified engines, mandating the replacement of scavenge pump gears P/N 635334 and 639388 to ensure compliance with the safety requirements set out in the regulations. Compliance is required within 500 hours time in service or at the next access to the affected parts, whichever comes first. The directive is applicable across the Commonwealth of Australia and aligns with FAA AD 89-24-01 Rev 1, reflecting the international safety standards for aviation operations. There are no specific exclusions or exemptions mentioned in the directive, although compliance may be subject to variations through subordinate instruments or further amendments.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39 - 106, includes specific Airworthiness Directives (AD) that govern the maintenance and operational standards of aircraft engines. One such directive, AD/CON/57 Amendment 1, pertains to Teledyne Continental Motors Piston Engines (Section 106). This directive applies to TSIO-520B, BB, D, DB, E, EB, J, JB, K, KB, N, NB, UB, and VB engines, as outlined in TCM Service Bulletin M90-6 (Section 10/90). The directive mandates the replacement of scavenge pump gears P/N 635334 and 639388, in compliance with the requirements detailed in TCM Service Bulletin M90-6 (Section 10/90). The requirement to replace these gears is to address concerns about their integrity, as referenced by FAA AD 89-24-01 Rev 1. Entities governed by this AD must ensure that the specified scavenge pump gears are replaced within 500 hours of time in service or at the next scheduled maintenance access to the affected parts, whichever comes first (Section 10/90). The compliance date for this directive is 4 October 1990, and adherence to this schedule is mandatory to maintain the airworthiness of the aircraft (Section 10/90). This directive reflects advice received post the initial issue of the directives, aimed at ensuring the safety and reliability of the engines by addressing specific integrity issues with the mentioned gears. Failure to comply with the requirements of AD/CON/57 Amendment 1 can result in severe consequences. Non-compliance may lead to penalties under the Civil Aviation Act 1988 and associated regulations. The specific penalties for breaches can include fines and potential criminal charges, with the maximum penalties varying based on the severity of the breach and the impact on aviation safety. The authorities have the power to take enforcement actions, which can include grounding of the affected aircraft until the required actions are completed, thereby ensuring that the airworthiness standards are strictly adhered to.