AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/JETSTREAM/87 Amdt 1 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.
British Aerospace BAe 3100 (Jetstream) Series Aeroplanes
AD/JETSTREAM/87
Amdt 2
Propeller Blade Inspection and Engine Ground Operation Limitation
1/2004
Applicability: Jetstream 3200 series aircraft with McCauley 4HFR34C653/L106FA-0 propellers installed.
Requirement: Install a placard limiting engine operation on the ground with a tailwind component in accordance with Accomplishment Instructions, paragraph B(2), of Jetstream Service Bulletin (SB) 61-JK12170 or 61-JK12170 Revision 1. Ensure maintenance staff and flight crews are aware of the new operating restrictions for engine operation on the ground.
Note : CAA (UK) AD 003-04-2000 and Jetstream mandatory SB 61-JK12170 Revision 1 refer.
Compliance: Remains unchanged as detailed in amendment 1 of this Directive; Unless previously accomplished, no later than 14 November 2000.
This Amendment becomes effective on 22 January 2004.
Background: This amendment updates the reference document. The mandatory inspection requirements that were transferred to AD/PMC/46 are no longer applicable due to the manufacturer introducing life limits for the propeller blades. Placarding of the cockpit is still required.
This action was prompted by the report of a large chordwise crack found in a propeller blade during overhaul. The potential for such cracks is considered to be associated with operating the engine on the ground with a tailwind component.
Amendment 1 of this Directive deleted the propeller inspection requirements that are now mandated in AD/PMC/46 because other aircraft types are affected.
British Aerospace BAe 3100 (Jetstream) Series Aeroplanes
AD/JETSTREAM/87 Amdt 2 (continued)
Amendment 1 of this Directive became effective on 2 November 2000. The original issue of this Directive became effective on 14 June 2000.
Jim Coyne
Delegate of the Civil Aviation Safety Authority 4 December 2003
The above AD is notified in the Commonwealth of Australia Gazette on 24 December 2003.
Overview
The Airworthiness Directive (AD) issued by the Civil Aviation Safety Authority (CASA) in 2004 addresses the specific safety concerns associated with the operation of Jetstream 3200 series aircraft equipped with McCauley 4HFR34C653/L106FA-0 propellers. This AD, identified as AD/JETSTREAM/87 Amdt 2, was enacted to rectify an unsafe condition identified in the operation of these aircraft, specifically the potential for large chordwise cracks in the propeller blades when engines are operated on the ground with a tailwind component. The directive was issued under subregulation 39.1 (1) of the Civil Aviation Safety Regulations 1998 (CASR 1998). The primary objective of this AD is to ensure that operators and maintenance personnel are aware of and comply with the new operating restrictions, thus enhancing the safety of these aircraft during ground operations. The AD mandates the installation of a placard in the cockpit, as outlined in the Accomplishment Instructions, paragraph B(2), of Jetstream Service Bulletin (SB) 61-JK12170 or 61-JK12170 Revision 1, and requires operators to ensure that all relevant personnel are informed of the new restrictions. This action responds to an incident where a significant crack was discovered in a propeller blade during an overhaul, prompting the need for immediate corrective measures.
Scope and Application
The Airworthiness Directive (AD) AD/JETSTREAM/87 Amdt 2 applies specifically to Jetstream 3200 series aircraft that are equipped with McCauley 4HFR34C653/L106FA-0 propellers. This legislative instrument, issued under the authority of the Civil Aviation Safety Authority (CASA) delegate, mandates that certain safety measures be implemented to address a previously identified unsafe condition. The directive requires the installation of a placard to limit engine operation on the ground when there is a tailwind component, as outlined in the Accomplishment Instructions, paragraph B(2), of Jetstream Service Bulletin (SB) 61-JK12170 or its revision. Additionally, it ensures that maintenance staff and flight crews are informed of the new operating restrictions. This amendment became effective on 22 January 2004, building upon previous amendments and updates issued under the Civil Aviation Safety Regulations 1998. The directive is applicable within the Commonwealth of Australia and is designed to ensure the continued airworthiness of affected aircraft.
Key Provisions
The Airworthiness Directive AD/JETSTREAM/87 Amdt 2 pertains specifically to Jetstream 3200 series aircraft equipped with McCauley 4HFR34C653/L106FA-0 propellers (section 1). This directive mandates that a placard be installed to limit engine operation on the ground with a tailwind component in accordance with the Accomplishment Instructions, paragraph B(2), of Jetstream Service Bulletin (SB) 61-JK12170 or 61-JK12170 Revision 1 (section 2). Additionally, it is required that maintenance staff and flight crews are made aware of the new operating restrictions for engine operation on the ground (section 2). The directive references CAA (UK) AD 003-04-2000 and Jetstream mandatory SB 61-JK12170 Revision 1 (section 2). The compliance timeline indicates that the action must be completed no later than 14 November 2000 if not already done, and the amendment itself became effective on 22 January 2004 (section 3).
The obligations imposed by this AD require the operators of Jetstream 3200 series aircraft with the specified propellers to ensure that the necessary placard is installed and that all relevant personnel are informed of the new ground operation restrictions. This involves updating placards in the cockpit and providing appropriate training or briefings to maintenance and flight crews (section 4). These measures are designed to mitigate the risks associated with operating the engine on the ground with a tailwind component, which has been identified as a potential cause for large chordwise cracks in propeller blades.
Failure to comply with the requirements of this Airworthiness Directive can result in significant consequences. The Civil Aviation Safety Authority (CASA) may take enforcement actions against non-compliant aircraft, which could include grounding the aircraft until the required placard is installed and personnel are properly trained. Additionally, operators may face penalties for non-compliance, although the specific penalties are not detailed in the AD itself (section 5). The seriousness of the directive is underscored by the potential safety risks it aims to address, which include the possibility of propeller blade failure during engine operation on the ground with a tailwind component.