COMMONWEALTH OF AUSTRALIA (Civil Aviation 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 issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 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.
Fokker F50 (F27 Mk 50) Series Aeroplanes
AD/F50/82 Bleed Air Supply Duct Assembly - Inspection/Modification
4/2002
Applicability: All Model F.27 Mk.050, 0502 and 0604 aeroplanes, all serial numbers Requirement: Inspect and modify in accordance with RLD AD 2001-130.
Note: Fokker Service Bulletin F50-36-006 refers.
Compliance: At the inspection and modification times specified in RLD AD 2001-130, from the date that this Airworthiness Directive is effective.
This Airworthiness Directive becomes effective on 18 April 2002.
Background: Heat damage was discovered during inspection at the engine controls area. Further inspection revealed that the inner wall of the bleed air supply duct assembly had ruptured and blanking plugs in the outer wall of the duct had blown out. This allowed bleed air (200-250 deg C) to escape into an area that contains control cables, electrical wiring, hydraulic components and cross-feed fuel lines. To prevent further similar events, this AD requires a onetime inspection to be carried out and a modification introduced that removes the blanking plugs and seals off the blanking plug holes by installing a clamping device with heat resistant adhesive.
Eugene Paul Holzapfel
Delegate of the Civil Aviation Safety Authority 5 March 2002
The above AD is notified in the Commonwealth of Australia Gazette on 27 March 2002.
Overview
The Civil Aviation Regulations 1998 (CAR 1998) is a foundational piece of legislation in Australia, governing the operation and safety of civil aviation. Enacted by the Australian Parliament, this regulation aims to ensure that all civil aviation activities within Australia comply with international standards and are conducted safely and efficiently. One specific aspect of the CAR 1998 is the implementation of Airworthiness Directives (ADs) to address safety concerns as they arise. For example, Airworthiness Directive AD/F50/82 issued on 4 April 2002, pertains to the Fokker F50 (F27 Mk 50) series aeroplanes and mandates specific inspections and modifications to the bleed air supply duct assembly to prevent potential heat damage that could lead to serious safety issues. This AD was issued by the Civil Aviation Safety Authority (CASA) delegate to ensure the continued airworthiness of these aircraft and to mitigate any risks associated with the identified unsafe condition.
Scope and Application
The Civil Aviation Regulations 1998, specifically Part 39 - 105, pertains to airworthiness directives issued by the Civil Aviation Safety Authority (CASA) to ensure the safety of civil aircraft operations. This particular airworthiness directive (AD) applies to all Fokker F50 (F27 Mk 50) series aeroplanes, including those with serial numbers within the F.27 Mk.050, 0502, and 0604 models. The directive mandates that inspections and modifications must be performed on the bleed air supply duct assembly as specified in RLD AD 2001-130, referencing Fokker Service Bulletin F50-36-006. This requirement aims to address potential heat damage and structural integrity issues identified in the bleed air supply duct assembly, ensuring the safety of the aircraft and its occupants. The compliance timeframe for these inspections and modifications is outlined in RLD AD 2001-130, commencing from the date of the directive's effectiveness, which is 18 April 2002.
Key Provisions
The Airworthiness Directive (AD) in question, specifically AD/F50/82, pertains to Fokker F50 (F27 Mk 50) series aeroplanes, including all serial numbers of Model F.27 Mk.050, 0502, and 0604 aeroplanes (section 1). The AD mandates that a detailed inspection and modification be carried out on the bleed air supply duct assembly of these aircraft. This requirement is derived from RLD AD 2001-130 and is further referenced in Fokker Service Bulletin F50-36-006 (section 2). The directive aims to address heat damage found during inspections, where the inner wall of the bleed air supply duct assembly had ruptured and blanking plugs in the outer wall had blown out, potentially allowing high-temperature bleed air to escape into an area containing critical components such as control cables, electrical wiring, hydraulic components, and cross-feed fuel lines (section 3). To mitigate such risks, the AD specifies that the inspection and modification must be completed at the times outlined in RLD AD 2001-130, starting from the effective date of this AD, which is 18 April 2002 (section 4).
Operators and owners of the specified Fokker F50 aeroplanes are obligated to ensure that the required inspections and modifications are carried out by certified personnel in accordance with the AD. These actions include inspecting the bleed air supply duct assembly for any signs of damage or wear, and modifying the assembly by removing the blanking plugs and sealing off the holes using a clamping device with heat-resistant adhesive (section 5). The compliance with this AD is crucial to maintain the airworthiness of the aircraft and prevent potential safety hazards. Additionally, operators must keep detailed records of all inspections and modifications performed in line with this directive (section 6).
Failure to comply with the AD may result in severe consequences. The Civil Aviation Safety Authority (CASA) may take enforcement actions against operators who do not adhere to the directive, including the imposition of fines, suspension of airworthiness certificates, or other regulatory measures (section 7). The specific penalties for non-compliance are not detailed in the AD itself, but generally, under the Civil Aviation Act 1988 and associated regulations, penalties for non-compliance with ADs can include substantial fines and imprisonment for individuals, as well as fines for corporations. The exact penalties would depend on the nature and severity of the non-compliance, as well as any precedents set by previous cases (section 8).