AD/S-76/18 - Pilot and Co-Pilot Seats, Support Frames - Inspection

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia and administered by the Civil Aviation Safety Authority, address safety concerns and compliance within the aviation industry. A specific example of this is found in Part 39, which includes Airworthiness Directives such as AD/S-76/18 concerning Sikorsky S-76 Series Helicopters. This directive was introduced to address a specific safety issue regarding the pilot and co-pilot seats in certain S76 helicopters equipped with AMI Industries seats. The problem identified was the potential for defective tube support members in these seats, which could compromise safety during flight. The policy objective behind such directives is to ensure that all civil aircraft maintain a high standard of airworthiness, thereby protecting the safety of passengers and crew. Compliance with these directives is mandatory, with specific timelines and procedures outlined to address and rectify the identified safety concerns.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105 and the Airworthiness Directive AD/S-76/18, pertains to all Sikorsky S-76 series helicopters that are equipped with AMI Industries seats part numbers 1078-1 and 1078-3, which are serial numbered as listed in AMI Industries Service Bulletin No. 25-S76-1. This legislation applies directly to the manufacturers, operators, and maintenance personnel of these particular aircraft models, demanding a thorough inspection and subsequent repair of the pilot and co-pilot seats as specified by the referenced documents. The directive mandates compliance by 9 May 1981, with the aim of addressing potential defects in the tube support members of the seats, thereby ensuring continued airworthiness of the aircraft. The application of this directive is under the authority of the Commonwealth of Australia, with the Civil Aviation Safety Authority overseeing adherence to the stipulated safety requirements.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, contain Airworthiness Directives (AD) that are imperative for ensuring the safety of civil aviation operations. One such directive is AD/S-76/18 concerning the Sikorsky S-76 Series helicopters. This directive mandates an inspection and, if necessary, repair of pilot and co-pilot seats that are fitted with certain AMI Industries seats (sections 5/81). The affected seats are those with Part Numbers 1078-1 and 1078-3, and they must fall within the serial numbers listed in AMI Industries Service Bulletin No. 25-S76-1. The primary requirement of AD/S-76/18 is that all Sikorsky S-76 Series helicopters with the specified AMI Industries seats must undergo an inspection by 9 May 1981. This inspection is crucial as it aims to identify any defective tube support members within the seats. If defects are found, the repairs must be carried out in accordance with the instructions provided in AMI Industries Service Bulletin No. 25-S76-1, which is referenced and attached to Sikorsky Customer Service Notice No. 76-63. This ensures that the repair procedures adhere to the manufacturer's guidelines. The obligations imposed by this directive are clear and specific. Operators of Sikorsky S-76 Series helicopters must ensure that the required inspections and any subsequent repairs are completed by the stipulated deadline. Failure to comply with these directives could result in significant safety risks, potentially leading to compromised flight safety. The directive references essential documents, such as the Sikorsky Customer Service Notice No. 76-63 and AMI Industries Service Bulletin No. 25-S76-1, to provide operators with detailed instructions on how to conduct the inspection and perform the necessary repairs. Non-compliance with the requirements of AD/S-76/18 could lead to serious consequences. The Civil Aviation Safety Authority (CASA) may take enforcement action against operators who fail to adhere to the Airworthiness Directives. This could include civil penalties, enforcement notices, or even grounding of the aircraft until compliance is achieved. Such actions underscore the importance of strict adherence to safety directives in maintaining the integrity and safety of civil aviation operations.