AD/LEARJET 35/9 - Secondary Yaw Damper Servo Cable Clamp Bolt - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Australian Parliament, aim to ensure the safety and efficiency of civil aviation in Australia. The legislation establishes a comprehensive framework that governs all aspects of civil aviation operations, including aircraft airworthiness, pilot licensing, and aviation safety regulations. The specific focus on the Gates Learjet 35 and 36 Series Aeroplanes in PART 39 - 105 addresses the need for stringent oversight and maintenance standards to ensure these aircraft meet the required safety benchmarks. AD/LEARJET 35/9 mandates the inspection of the Secondary Yaw Damper Servo Cable Clamp Bolt, ensuring compliance within 100 hours time in service after 31 December 1978. This directive underscores the policy objective of maintaining high safety standards by addressing specific mechanical components critical to the aircraft's operational integrity.

Scope and Application

The Civil Aviation Safety Authority (CASA) regulations, specifically PART 39 - 105, pertain to the mandatory airworthiness directives concerning Gates Learjet 35 and 36 series aeroplanes, as outlined in the AD/LEARJET 35/9 document. This regulation applies to all model 35 aircraft with serial numbers ranging from 35-001 to 35-182 and all model 36 aircraft with serial numbers from 35-001 to 35-038. The primary focus of this directive is the inspection of the secondary yaw damper servo cable clamp bolt, which must be completed within 100 hours of time in service after 31 December 1978. This regulatory framework ensures adherence to the safety standards set forth by the Gates Learjet SB 35/36-22-2 document, thereby maintaining the airworthiness of the specified aircraft. The geographic and jurisdictional reach of this regulation is governed by the Commonwealth of Australia, ensuring consistent application across all states and territories. The regulation does not specify any exclusions, exemptions, or thresholds beyond the outlined serial numbers and timeframe, and its enforcement extends to any modifications or updates made through subordinate instruments as necessary.

Key Provisions

The Civil Aviation Regulations 1998 (Cth), particularly Part 39, contains specific provisions related to airworthiness directives. Section 105 of this part addresses the Schedule of Airworthiness Directives, which mandates certain safety measures for specific aircraft types. The directive in question, AD/LEARJET 35/9, pertains to the secondary yaw damper servo cable clamp bolt inspection for Gates Learjet 35 and 36 series aeroplanes. This directive applies to all model 35 aircraft with serial numbers (S/Nos.) 35-001 to 35-182, and all model 36 aircraft with S/Nos. 36-001 to 36-038 (Section 105). The compliance requirement states that this inspection must be carried out within 100 hours of time in service after 31 December 1978 (Section 105). The regulations impose obligations on aircraft operators and maintenance personnel to ensure that the specified inspection of the secondary yaw damper servo cable clamp bolt is performed according to the outlined schedule. This includes adherence to the guidelines provided in Gates Learjet Service Bulletin 35/36-22-2. The objective is to maintain the airworthiness of these aircraft by preventing potential failures or malfunctions associated with the secondary yaw damper servo cable clamp bolt. The directive emphasises the importance of timely and regular inspections to ensure the safety and reliability of the aircraft. Failure to comply with the airworthiness directive AD/LEARJET 35/9 can lead to serious consequences. Section 105 of the Civil Aviation Regulations 1998 stipulates that non-compliance with an airworthiness directive can result in the aircraft being deemed unairworthy. This can have significant legal and safety implications for operators, including potential grounding of the aircraft. The regulations also provide for enforcement actions, which can include fines and other penalties for non-compliance. The specific penalties are outlined in other sections of the Civil Aviation Act 1988 and related regulations, but they generally aim to ensure that safety standards are upheld and that aircraft remain in a safe and airworthy condition.