COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/BN-2/74 and issues the following AD under subregulation 39.1 (1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Pilatus Britten-Norman BN-2 Series Aeroplanes
AD/BN-2/74
Amdt 1
Engine Mounting Brackets 8/2003
Applicability: All Model BN2A, BN2B, BN2T, BN2T-4R, and BN2T-4S Islander aircraft. Requirement: Inspect in accordance with B-N Group Ltd. Mandatory Service Bulletin (SB) No. 275
Issue 3.
Note: UK CAA AD 005-11-2001 refers.
Compliance: At the next 500-hour inspection or SB 190 inspection after 21 March 2002, whichever occurs first. Repeat inspections/replace bracket(s) in accordance with criteria specified in the Compliance Statement of the Requirement document.
The initial compliance time remains unchanged by this issue. This Amendment becomes effective on 7 August 2003.
Background: There have been reports of extensive cracking of the engine mount brackets.
Manufacturer service bulletins SB 61 and SB 91 cover wear, cracking and corrosion of the engine mounting brackets, but not with cracks at the points described in the Requirement document.
Amendment 1 is issued in response to the latest Requirement document, which changes crack tolerance/repeat inspection criteria.
David Villiers
Delegate of the Civil Aviation Safety Authority 18 June 2003
The above AD is notified in the Commonwealth of Australia Gazette on 16 July 2003.
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Overview
The Civil Aviation Safety Regulations 1998, enacted by the Australian Government, were introduced to ensure the safety and airworthiness of aircraft operating within Australian airspace. One specific regulation within this framework is the Airworthiness Directive (AD), which serves to address potential safety issues by mandating corrective actions on aircraft or aeronautical products. This particular legislative instrument, F2006B04787, focuses on Pilatus Britten-Norman BN-2 Series Aeroplanes, specifically addressing issues with engine mounting brackets. The directive, issued under the authority of the Civil Aviation Safety Authority (CASA), requires regular inspections and maintenance of the specified aircraft models to prevent potential structural failures. The policy objective behind this regulation is to maintain the highest safety standards in civil aviation by proactively addressing identified safety risks through mandated inspections and repairs.
Scope and Application
The Civil Aviation Safety Regulations 1998, specifically under Part 39 - 105, pertains to the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives. This regulation applies to all Model BN2A, BN2B, BN2T, BN2T-4R, and BN2T-4S Islander aircraft, requiring specific maintenance actions to address identified safety concerns. The directive mandates that inspections be conducted in accordance with B-N Group Ltd. Mandatory Service Bulletin (SB) No. 275 Issue 3, which addresses extensive cracking of the engine mounting brackets. The compliance period requires these inspections to occur at the next 500-hour inspection or the SB 190 inspection after 21 March 2002, whichever comes first. This Airworthiness Directive is effective from 7 August 2003 and is applicable nationally across Australia, as it is issued under the authority of the Commonwealth of Australia and notified in the Commonwealth of Australia Gazette.
Key Provisions
The Civil Aviation Safety Regulations 1998 (CASR), particularly Part 39 - 105, mandate the Civil Aviation Safety Authority (CASA) to issue Airworthiness Directives (ADs) to address safety concerns related to specific aircraft. Section 39.1(1) of the CASR empowers CASA to issue these directives when it is deemed necessary for maintaining airworthiness. In this particular instance, the directive AD/BN-2/74, Amendment 1, targets the Pilatus Britten-Norman BN-2 Series Aeroplanes, specifically the Model BN2A, BN2B, BN2T, BN2T-4R, and BN2T-4S Islander aircraft. The directive requires an inspection and potentially the replacement of the engine mounting brackets in accordance with the B-N Group Ltd. Mandatory Service Bulletin No. 275 Issue 3, in response to reports of extensive cracking in these components.
The AD specifies that the inspection must occur at the next 500-hour inspection or the SB 190 inspection, whichever comes first, following 21 March 2002. This compliance requirement is intended to ensure that any issues with the engine mounting brackets are identified and addressed promptly. The directive also notes that the UK Civil Aviation Authority AD 005-11-2001 refers to similar concerns, reinforcing the international relevance and importance of this safety measure. The AD Amendment 1 became effective on 7 August 2003, updating the inspection and replacement criteria in line with the latest safety requirements.
Entities and individuals governed by this AD must comply with the specified inspection and replacement procedures for the engine mounting brackets. This involves following the detailed instructions provided in the B-N Group Ltd. Mandatory Service Bulletin No. 275 Issue 3, ensuring that any identified cracks or other issues are addressed according to the criteria outlined in the Compliance Statement of the Requirement document. Failure to comply with these directives can result in the aircraft being deemed unairworthy, potentially leading to grounding and legal consequences. The regulations underscore the importance of adhering to these safety standards to maintain the airworthiness of the affected aircraft models.
Failure to comply with the AD requirements can lead to severe consequences, including civil and criminal penalties. Under the CASR, non-compliance with ADs can result in fines and, in severe cases, criminal charges. The exact penalties depend on the nature and severity of the non-compliance, but they can include substantial fines for both individuals and corporations. Additionally, non-compliance can result in the grounding of the aircraft, which can have significant operational and financial repercussions for the operators. Ensuring adherence to these safety directives is crucial for maintaining the highest standards of aviation safety.