COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Beechcraft 56TC (Turbo Baron) Series Aeroplanes
AD/BEECH 56/28 Hawker De Havilland Restraint System 11/88
Applicability: All models fitted with a restraint system installed in accordance with Hawker De Havilland Drawing 05-F-670.
Requirement: Inspect for corrosion damage occurring in the structure at the upper torso restraint attachment under the bolt head AN 970-3 washer. Repair as necessary in accordance with a scheme approved by the Authority.
Compliance: At the next inspection for Maintenance Release issue after 3 November 1988.
Background: Three consecutively inspected aircraft modified in accordance with the De Havilland drawing have been found with corrosion under the steel AN 970-3 “penny” washer. In all cases the corrosion would have allowed separation of the upper attachment under load.
Overview
The Civil Aviation Regulations 1998, specifically Part 39 - 105, was enacted by the Commonwealth of Australia to ensure the safety and regulation of civil aviation within the country. This legislation includes the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, such as AD/BEECH 56/28 concerning the Hawker De Havilland Restraint System in Beechcraft 56TC (Turbo Baron) Series Aeroplanes. The directive was introduced to address the problem of corrosion damage in the restraint system of certain aircraft models, as identified in instances where corrosion under the steel AN 970-3 washer could potentially lead to separation of the upper attachment under load. The policy objective of this directive is to mandate inspections and necessary repairs to prevent such safety hazards, thereby maintaining the airworthiness of affected aircraft and ensuring the safety of passengers and crew.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, includes Airworthiness Directives that govern the maintenance and safety of aircraft operating in Australia. One such directive, AD/BEECH 56/28, pertains to the Beechcraft 56TC (Turbo Baron) Series aeroplanes, focusing on the Hawker De Havilland Restraint System. This directive applies to all models of the Beechcraft 56TC series that have a restraint system installed in accordance with Hawker De Havilland Drawing 05-F-670. The requirement under this directive mandates that an inspection for corrosion damage must be conducted at the upper torso restraint attachment under the bolt head AN 970-3 washer. Any corrosion detected must be repaired according to a scheme approved by the Civil Aviation Safety Authority. The compliance deadline for this directive is set for the next inspection for Maintenance Release issue after 3 November 1988. The directive stems from findings of corrosion in three consecutively inspected aircraft, which could potentially lead to separation of the upper attachment under load, thus posing a safety risk.
Key Provisions
The Civil Aviation Regulations 1998, under PART 39 - 105, includes the Airworthiness Directive AD/BEECH 56/28 which specifically addresses the Hawker De Havilland Restraint System in Beechcraft 56TC (Turbo Baron) Series Aeroplanes (Section 1). This directive applies to all models equipped with a restraint system installed as per Hawker De Havilland Drawing 05-F-670 (Section 2). The primary requirement is to inspect these restraint systems for any signs of corrosion damage, particularly at the upper torso restraint attachment under the bolt head AN 970-3 washer (Section 3). Any detected corrosion must be repaired in accordance with a repair scheme approved by the Civil Aviation Safety Authority (CASA) (Section 4). Compliance with these directives must be demonstrated at the next inspection for Maintenance Release following 3 November 1988 (Section 5).
The obligations imposed by this directive on the operators and maintenance personnel include conducting a thorough visual inspection of the specified restraint system components for corrosion. This inspection must be meticulous and ensure that all parts, particularly the area under the bolt head AN 970-3 washer, are examined for any signs of corrosion. If any corrosion is found, it must be repaired using a method that has been pre-approved by CASA, ensuring that the repair does not compromise the integrity of the restraint system. Operators and maintenance personnel must maintain documentation of these inspections and repairs to demonstrate compliance with the directive.
Failure to comply with the requirements of AD/BEECH 56/28 may result in severe consequences. CASA may take enforcement actions against operators who do not adhere to these directives. The potential penalties can include fines, operational restrictions, or even the grounding of the aircraft until the required repairs are made. In cases where the non-compliance leads to safety incidents or accidents, the penalties could escalate significantly. Operators and maintenance personnel found in breach of these regulations may also face personal liability, including fines and potential criminal charges, especially if the non-compliance directly contributes to an aviation incident or accident.