COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Cessna 400 Series Aeroplanes
AD/CESSNA 400/90
Amdt 2
Engine Mount Beams 2/89
Applicability: Model 404 with S/Nos 404-0001 to 404-0859. Requirement: Action in accordance with:
- Cessna Service Bulletin MEB 86-7 and
2. Cessna Service Bulletin MEB 88-2; or
an alternative scheme approved by the Authority. East-West Airlines Drawing C-71- 20-2137 is an approved alternative to SB MEB 88-2 for modification of the forward area of the engine mount beam.
Note: Aircraft in compliance with the original issue of this Directive may require additional work in accordance with the Requirement Documents.
Compliance: Inspections: In accordance with the Requirement Documents.
Modifications: Unless already accomplished; before further flight if cracks are detected during inspections.
Note: Embodiment of modifications, which constitute terminating action for this Directive, may be accomplished at any time prior to detection of cracks.
Background: The manufacturer reports that cracking may occur in the region of the fwd and aft engine mount attachment holes on the engine mount beam. Amendment 1 to this Directive added the requirements of SB MEB 88-2, which details inspection and modification of the forward area of the engine mount beam. Amendment 1 also made it mandatory to modify the aft area in accordance with SB MEB 86-7. Amendment 2 recognises East-West Airlines Drawing C-71-20-2137 as an alternative scheme for modification of the forward area.
Overview
The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, are a comprehensive set of rules governing civil aviation safety within the country. This particular piece of legislation, specifically part 39 - 105, pertains to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, addressing the safety and operational standards of aircraft. This legislation was introduced to ensure that all civil aircraft, including the Cessna 400 series aeroplanes, meet stringent safety requirements to prevent incidents and accidents. One such directive, AD/CESSNA 400/90 Amendment 2, focuses on the engine mount beams of Cessna 404 models, aiming to rectify potential structural issues that could compromise flight safety. The overarching policy objective is to maintain the highest safety standards in the operation of civil aircraft, thus protecting both the passengers and the aviation workforce.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105 under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, applies to Cessna 400 series aeroplanes, particularly Model 404 with serial numbers ranging from 404-0001 to 404-0859. This regulation mandates compliance with either the specified Cessna Service Bulletins or an alternative scheme approved by the Civil Aviation Safety Authority. East-West Airlines Drawing C-71-20-2137 is recognised as an approved alternative for modifications to the forward area of the engine mount beam. The directive requires inspections and modifications in accordance with the specified requirement documents, particularly if cracks are detected. Compliance with this directive is essential for ensuring the airworthiness of affected aircraft, and modifications must be completed before further flight if cracks are identified during inspections. This regulation extends across the Commonwealth of Australia, overseen by the Civil Aviation Safety Authority. There are no stated exclusions, exemptions, or thresholds within this particular directive, but the scope may be extended or restricted through subordinate instruments issued by the Civil Aviation Safety Authority.
Key Provisions
The Civil Aviation Regulations 1998, specifically Part 39 - 105, under the Civil Aviation Safety Authority Schedule of Airworthiness Directives, includes detailed provisions for maintaining the airworthiness of Cessna 400 series aeroplanes. Section AD/CESSNA 400/90 Amendment 2 applies to Model 404 aircraft with serial numbers ranging from 404-0001 to 404-0859. This directive mandates compliance with either Cessna Service Bulletin MEB 86-7 for the aft engine mount beam or Cessna Service Bulletin MEB 88-2 for the forward area of the engine mount beam, or an alternative scheme approved by the Authority. Notably, East-West Airlines Drawing C-71-20-2137 is recognised as an alternative for modifying the forward area of the engine mount beam, as stated in the directive.
The obligations imposed by this directive are primarily centred around the inspection and modification of specific parts of the aircraft. Operators must conduct inspections in accordance with the specified requirement documents, which include the service bulletins and any approved alternatives. Modifications must be undertaken if cracks are detected during inspections, unless the modifications have already been completed. The directive also allows for modifications to be performed at any time before cracks are detected, providing flexibility in scheduling the required maintenance.
Failure to comply with the requirements outlined in this directive may result in serious consequences. While the specific legal penalties are not detailed within the directive itself, non-compliance with Civil Aviation Regulations can generally lead to enforcement actions by the Civil Aviation Safety Authority, including fines, suspension of aircraft operating certificates, or other regulatory actions. These measures are in place to ensure the continued safety of the aircraft and its passengers. The exact penalties would be determined based on the specific nature and severity of the non-compliance, in accordance with the broader provisions of the Civil Aviation Act 1988 and associated regulations.