AD/BEECH 90/14 - Elevator Tab Hinge Beam - Inspection

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safety of civil aviation within Australia. Specifically, Part 39 - 105 of the Regulations addresses Airworthiness Directives, ensuring that all aircraft operating in Australian airspace meet stringent safety standards. One such Airworthiness Directive is AD/BEECH 90/14, which was introduced to address the problem of potential cracking in the elevator tab hinge beam of Beechcraft 90 and 65-90 (King Air) series aeroplanes. The directive aims to mitigate safety risks by mandating regular inspections of the upper and lower flanges of the left and right elevator tab hinge beams, particularly for aircraft that have accumulated over 1000 hours of total time in service. The objective of this regulation is to maintain the airworthiness of these aircraft by ensuring structural integrity and preventing in-flight failures.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, issued under the authority of the Civil Aviation Safety Authority, mandates the issuance of airworthiness directives for various aircraft, including the Beechcraft 90 and 65-90 (King Air) series aeroplanes. These regulations apply to all aircraft of the specified series that have accumulated more than 1000 hours of total time in service. The directive AD/BEECH 90/14 requires a thorough inspection of the upper and lower flanges of the left and right elevator tab hinge beams, identified by part number 50-610000-94, to ascertain the presence of any cracking along the rivet line. This inspection must be carried out immediately and subsequently at intervals not exceeding 200 hours of time in service. The scope of these regulations is broad, impacting operators and maintenance personnel within the Commonwealth of Australia, ensuring that safety standards are maintained across the civil aviation sector. While the regulations are comprehensive, they do not specify exclusions or exemptions beyond the scope of the aircraft and service hours mentioned. Compliance with these airworthiness directives is imperative to ensure the continued safe operation of these aircraft within Australian airspace.

Key Provisions

The key operative sections of this legislative instrument pertain to the inspection requirements for Beechcraft 90 and 65-90 (King Air) series aeroplanes. Section 39-105 of the Civil Aviation Regulations 1998 specifies that all models in excess of 1000 hours of total time in service must undergo an inspection (AD/BEECH 90/14). The particular requirement, as outlined in section 7/68, is to inspect the upper and lower flanges of the left-hand (LH) and right-hand (RH) elevator tab hinge beam P/N 50-610000-94 for any signs of cracking along the rivet line. The compliance clause mandates that this inspection must be conducted immediately and subsequently at intervals not exceeding 200 hours of time in service. The obligations imposed by this Act on the relevant parties are clear and straightforward. Operators of Beechcraft 90 and 65-90 series aeroplanes must ensure that the specified inspections are performed without delay and according to the stipulated intervals. This entails identifying the appropriate personnel, likely with the requisite qualifications and experience in aviation maintenance, to carry out the inspections. The responsibility for compliance falls on the operator, who must maintain records of each inspection to demonstrate adherence to the regulatory requirements. Breach of the obligations outlined in the Civil Aviation Regulations 1998 can result in serious consequences. Under the Act, failure to comply with the inspection requirements can lead to civil and potentially criminal penalties. While the specific penalties are not detailed in the excerpt, it is within the purview of the Civil Aviation Safety Authority to impose fines and other sanctions for non-compliance. Operators found in breach of these regulations may face significant financial penalties, and in severe cases, there could be implications for the airworthiness certificates of the affected aircraft, potentially leading to grounding of the aeroplanes until the deficiencies are rectified.