AD/CESSNA 150/32 Amdt 1 - Horizontal Stabiliser Forward Attachment

Overview

The Civil Aviation Regulations 1998 (Cth), which were enacted in 1998 by the Commonwealth Parliament, represent a comprehensive framework designed to ensure the safety and efficiency of civil aviation in Australia. Part 39, specifically, deals with the requirements and directives for airworthiness, ensuring that all aircraft meet stringent safety standards. One such directive, AD/CESSNA 150/32 Amendment 1, pertains to the inspection of the horizontal stabiliser forward attachment nutplates in Cessna 150, F150, 152, and F152 series aeroplanes. This amendment was introduced to address the identified risk of cracking in these critical components, which could potentially compromise the structural integrity of the aircraft. The policy objective behind these regulations is to enhance aviation safety by mandating regular inspections and maintenance, thereby preventing potential failures that could lead to accidents. The Civil Aviation Safety Authority (CASA) schedules these airworthiness directives to ensure compliance with the safety standards set forth by the Civil Aviation Regulations 1998. By requiring visual inspections of the nutplates and the surrounding horizontal stabiliser structure within specified intervals, CASA aims to preemptively detect and rectify any structural issues, thereby maintaining the highest safety standards in Australian civil aviation. The directive specifies that inspections must be carried out within 100 hours of time in service after 31 December 1985 or at the next scheduled inspection, whichever is later, and then at each subsequent issue of a new Maintenance Release. This ensures that the aircraft remain in a safe and airworthy condition, thereby protecting passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, addresses the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives concerning Cessna 150, F150, 152 & F152 series aeroplanes. The regulations mandate a specific requirement for detecting cracking in the horizontal stabiliser forward attachment nutplate for all models A150, A152, FA150, FA152, FRA150, and FRA152. This applies to any aircraft within the specified models that are operating under the jurisdiction of the Commonwealth of Australia. The directive requires the visual inspection of the nutplates and the horizontal stabiliser structure in the attachment area for any signs of cracking or structural distress. Compliance with these inspection requirements must occur within 100 hours of time in service after 31 December 1985, or at the next scheduled inspection for Maintenance Release issue after that date, and then at each subsequent issue of a new Maintenance Release. The regulation ensures ongoing aircraft safety by establishing a clear timeframe and procedure for inspections, thereby maintaining the structural integrity of these aircraft models in Australian airspace.

Key Provisions

The Civil Aviation Regulations 1998, specifically in Part 39, section 105, address the safety of certain Cessna aeroplanes through Airworthiness Directives (ADs). For the Cessna 150, F150, 152, and F152 series, the AD/CESSNA 150/32 Amendment 1 mandates specific procedures to ensure the safety of the horizontal stabiliser's forward attachment. Section 12/85 of this AD applies to all models A150, A152, FA150, FA152, FRA150, and FRA152. It requires operators to gain access to the horizontal stabiliser forward attachment area to visually inspect the nutplates for any cracking or structural distress, as well as inspect the horizontal stabiliser structure in the attachment area for similar issues. This inspection must be carried out within 100 hours of time in service after 31 December 1985, or at the next scheduled inspection for Maintenance Release issue after that date, whichever is later, and then at each subsequent issue of a new Maintenance Release. Compliance with these provisions is critical for ensuring the structural integrity of the aircraft's horizontal stabiliser. Operators must adhere to the outlined inspection protocols to maintain the airworthiness of their aircraft. This includes ensuring that trained personnel have the necessary access and are capable of performing detailed visual inspections. The AD mandates that these inspections are not just a one-off requirement but must be repeated at each Maintenance Release issue, ensuring ongoing safety and compliance with civil aviation standards. Failure to comply with these AD requirements can result in serious consequences. Non-compliance may lead to enforcement actions by the Civil Aviation Safety Authority (CASA), which can include fines, suspension of airworthiness certificates, or even grounding of the aircraft until the necessary inspections and repairs are completed. The seriousness of these consequences underscores the importance of adhering to the ADs to maintain safety and regulatory compliance. The specific penalties for non-compliance, including maximum fines and potential criminal charges, are determined by CASA in accordance with the Civil Aviation Act 1988 and the Civil Aviation Regulations 1998. These potential penalties serve as a deterrent against negligence and ensure that operators take the mandated inspections seriously.