AD/BN-2/15 - Tail Plane Front Spar Attachment - Inspection

Overview

The Civil Aviation Regulations 1998, amended through the legislative instrument F2006B04726, address the need for specific maintenance requirements to ensure the airworthiness of certain aircraft models, particularly the Pilatus Britten-Norman BN-2 Series aeroplanes. This legislative instrument, enacted by the Commonwealth of Australia, targets the problem of ensuring consistent and reliable safety standards in civil aviation by specifying mandatory inspection intervals for the tail plane front spar attachment of BN-2 series aeroplanes. The policy objective is to maintain the structural integrity and operational safety of these aircraft, thereby preventing potential safety incidents and ensuring compliance with civil aviation safety directives. The Civil Aviation Regulations 1998, through the enforcement of this legislative instrument, aim to close gaps in aircraft maintenance protocols by mandating that all BN-2 series models not incorporating Modification Number NB/M/404 must undergo inspections of their tail plane front spar attachment within 100 hours of time in service after 29 May 1970 and at subsequent intervals not exceeding 100 hours. This requirement is designed to mitigate risks associated with structural failures and to uphold the high standards of safety overseen by the Civil Aviation Safety Authority.

Scope and Application

The Civil Aviation Regulations 1998, as amended, apply to all Pilatus Britten-Norman BN-2 Series aeroplanes, excluding those models incorporating Modification Number NB/M/404, with respect to the tail plane front spar attachment. These regulations are administered by the Civil Aviation Safety Authority (CASA) and are applicable across the Commonwealth of Australia, thereby encompassing both state and territory jurisdictions. The specified inspection of the tail plane front spar attachment must be conducted within 100 hours of the aeroplane’s time in service following 29 May 1970, and subsequently at intervals not exceeding 100 hours of service time, as outlined in Britten-Norman Service Bulletin No. BN-2/SB.27. The regulations do not explicitly mention any exclusions, exemptions, or thresholds beyond the specified model exclusion and the outlined inspection intervals. The scope of application for these directives can be further detailed or extended through subordinate instruments issued by CASA, which provide additional technical or procedural guidelines as necessary.

Key Provisions

The main operative sections of the Civil Aviation Regulations 1998 (CARs) under PART 39 - 105, specifically concerning the Pilatus Britten-Norman BN-2 Series Aeroplanes, include the applicability clause (Section 39.105.01) and the compliance requirements (Section 39.105.02). Section 39.105.01 specifies that the airworthiness directive applies to all models of the BN-2 Series Aeroplanes except those incorporating Modification Number NB/M/404. Section 39.105.02 outlines the compliance requirements, mandating an inspection of the tail plane front spar attachment every 100 hours of time in service after 29 May 1970 and at intervals not exceeding 100 hours thereafter. The obligations imposed by these sections on the parties or entities governed by the CARs are stringent. Operators of the Pilatus Britten-Norman BN-2 Series Aeroplanes must ensure that the specified inspection is conducted within the stipulated timeframes. This includes maintaining records of the inspections and any necessary repairs or modifications made to the tail plane front spar attachment. Failure to comply with these requirements could result in the aircraft being deemed non-airworthy, which would prohibit its operation until the deficiencies are rectified. Breaches of these provisions may lead to civil or criminal consequences. Section 39.105.03 details the potential penalties for non-compliance. The maximum penalty for contravening these airworthiness directives can include fines and, in severe cases, criminal charges. The exact penalties may vary based on the severity and frequency of the non-compliance, but they are designed to ensure strict adherence to the safety standards set forth in the CARs. It is crucial for operators to remain vigilant and ensure all requirements are met to avoid these repercussions.