Overview

The Civil Aviation Regulations 1998, which were enacted by the Commonwealth of Australia and administered by the Civil Aviation Safety Authority (CASA), address various safety standards and requirements for civil aviation operations within Australia. One of the specific legislative instruments under these regulations is the Airworthiness Directive AD/BEECH 90/41, which was introduced to address safety concerns related to the cabin heater and aft fuselage drainage of the Beechcraft 90 and 65-90 (King Air) series aeroplanes. This directive applies to certain serial number ranges of these models, mandating modifications to ensure compliance with safety standards. The primary objective of AD/BEECH 90/41 is to mitigate risks associated with cabin heater failures and improve drainage systems in the aft fuselage, thus enhancing overall aircraft safety. Compliance with this directive is crucial for operators to maintain the airworthiness of affected aircraft, with specific timelines provided for the installation of placards, cabin heater modifications, and aft fuselage modifications.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105, mandates modifications for certain Beechcraft 90 and 65-90 (King Air) series aeroplanes to ensure compliance with airworthiness directives. This legislative instrument applies to specific models of the Beechcraft 90 and 65-90 series, namely the 65-90, 65-A90, and B90 with serial numbers LJ-1 to LJ-484. The regulations require the installation of a temporary placard on the heater control panel to warn of immediate action if the heater fails to function properly. Additionally, the cabin heater must be modified to include a cabin heater out light, and the aft fuselage must be modified to ensure proper drainage and sealing. Compliance with these requirements must be achieved within specific timeframes, with the temporary placard needing to be installed within 50 hours of the directive's issue date, the cabin heater modification completed before 1 January 1977, and the aft fuselage modification completed within 100 hours of the directive's issue date. Once the cabin heater modification is accomplished, the temporary placard may be removed. This legislative instrument is applicable within the Commonwealth of Australia and extends to all entities operating the specified Beechcraft models within its jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, mandate specific modifications and compliance requirements for Beechcraft 90 and 65-90 (King Air) series aeroplanes. The primary sections of the Airworthiness Directive AD/BEECH 90/41 address the cabin heater and aft fuselage drainage and sealing. These modifications are applicable to models 65-90, 65-A90, and B90 with serial numbers LJ-1 to LJ-484. Section 1 requires the installation of a temporary placard on the heater control panel that reads "IF HEATER FAILS TO HEAT, TURN OFF IMMEDIATELY." Section 2 mandates the modification of the cabin heater installation, including fitting a cabin heater out light, in accordance with Beechcraft Service Instruction No. 0230-412, Revision 3. Section 3 requires the modification of the aft fuselage in accordance with Beechcraft Service Instruction No. 0268-103, Revision 1. The Act imposes several obligations on the parties or entities it governs. Owners and operators of the specified Beechcraft models must ensure compliance with the Airworthiness Directive by adhering to the stipulated timeframes. For the temporary placard (Section 1), compliance must occur within 50 hours of time in service after 27 February 1976. The cabin heater modification (Section 2) must be completed before 1 January 1977, and the aft fuselage modification (Section 3) must be completed within 100 hours of time in service after 27 February 1976. The temporary placard installed under Section 1 can be removed once the modifications outlined in Section 2 are completed. Failure to comply with the provisions of the Airworthiness Directive AD/BEECH 90/41 may result in various consequences. The regulations do not explicitly outline specific offences, penalties, or consequences for non-compliance within the text provided. However, non-compliance with airworthiness directives generally can result in severe penalties under the Civil Aviation Act 1988, including fines and imprisonment. The Civil Aviation Safety Authority (CASA) may also take enforcement actions, such as grounding the aircraft, imposing operational restrictions, or pursuing legal action against the non-compliant party. It is important for operators to ensure strict adherence to the specified timelines and modifications to avoid any regulatory repercussions.