AD/SM-205/38 - Landing Gear Rod Springs

Overview

The Civil Aviation Regulations 1998, specifically within Part 39 - 105 Civil Aviation Safety Authority Schedule of Airworthiness Directives, addresses the safety concerns related to landing gear rod springs for SIAI Marchetti S205 and S208 series aeroplanes. This legislative instrument was enacted to ensure that all models S.208 and S.208A comply with the manufacturer's specifications to mitigate any safety risks associated with the identified manufacturing defect. The Civil Aviation Safety Authority, operating under the authority of the Commonwealth of Australia, issued this directive to address the problem of undersize wire used in certain landing gear rod springs, which could potentially compromise the aircraft's safety. The directive mandates corrective actions in accordance with SIAI Marchetti SB 205B59, with compliance required within 50 hours of time in service or at the next inspection, whichever comes first, after the directive's effective date of 14 August 1997.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority, mandate airworthiness directives that apply to various aircraft models. One such directive, AD/SM-205/38, pertains to SIAI Marchetti S205 and S208 series aeroplanes, specifically addressing landing gear rod springs. This directive applies to all models S.208 and S.208A and requires compliance with SIAI Marchetti SB 205B59. It is imperative that the specified action is taken within 50 hours of time in service after the directive's effective date of 14 August 1997, or at the next inspection for Maintenance Release issue following 14 August 1997, whichever comes first. This directive is a direct response to the manufacturer's discovery that certain springs had been manufactured from undersize wire, highlighting the importance of adherence to these safety standards to ensure airworthiness.

Key Provisions

The Civil Aviation Regulations 1998, Part 39 - 105 (subsection 105.003) establish the requirements for airworthiness directives, which are legally binding instructions issued by the Civil Aviation Safety Authority (CASA) to ensure the safe operation of aircraft. Specifically, AD/SM-205/38 pertains to SIAI Marchetti S205 and S208 series aeroplanes and addresses the issue of landing gear rod springs. The directive requires that the action specified in SIAI Marchetti SB 205B59 be taken for all models S.208 and S.208A. The compliance note, RAI AD 97-143, further clarifies the directive's applicability and requirements. The directive becomes effective on 14 August 1997 and requires compliance within 50 hours time in service after this date or at the next inspection for maintenance release issue, whichever occurs first. Under the Civil Aviation Regulations 1998, the manufacturer is obligated to ensure that the specified landing gear rod springs are replaced or repaired to meet the required specifications, as outlined in SIAI Marchetti SB 205B59. This action is necessary to address the issue of springs manufactured from undersize wire, which could compromise the safety of the aircraft. The obligation on the operator of the aircraft is to comply with this airworthiness directive by ensuring that the specified action is completed within the stipulated timeframe. This may involve scheduling maintenance work and ensuring that the necessary parts and personnel are available to perform the required repairs or replacements. Failure to comply with the provisions of AD/SM-205/38 may result in serious safety risks, as the undersized landing gear rod springs could lead to failure during landing, potentially resulting in accidents or other safety incidents. While the Civil Aviation Regulations 1998 do not explicitly state penalties for non-compliance with airworthiness directives, failure to adhere to these directives could lead to enforcement actions by CASA. These may include fines, suspension or revocation of the aircraft's certificate of airworthiness, or other regulatory actions against the operator or manufacturer. It is crucial for all parties involved to comply with these directives to ensure the continued safety of the aircraft and its passengers.