AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/MSR/18 Amdt 1 and issues the following 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.
Aerospatiale Rallye Series Aeroplanes
AD/MSR/18
Amdt 2
Engine Mount 12/2001 TX
Applicability: For Requirement 1: All Model:
- Rallye 180,
- Rallye 150,
- Rallye 110ST,
- MS 892,
- MS 893, and
- MS 894 A and MS 894 E aircraft with serial numbers 1005 through 2204, except agricultural aircraft, fitted with Socata kit OPT18098 9037;
equipped with engine mount part number 887.51.0.030.0, 892.51.0.033.0, 85.51.0.001.0, 892.51.0.001.0, 892.51.0.053.0, or 892.51.0.060.0.
For Requirement 2: All Model MS 893, MS 892 model A150, Rallye 150T, Rallye 150ST, and Rallye 180T aircraft equipped with engine mount part number 892.51.0.035.0.
Note 1: The engine mount part number 892.51.0.035.0 may have been installed on new aircraft between 1 April 1978 and 6 November 1978, or on other aircraft by application of Socata “Information Bulletin” No. 39 and/or DGAC AD 78-149(A).
Requirement: 1. Inspect the engine mount for cracks, and accomplish other actions; in accordance with Socata Service Bulletin Rallye aircraft No. 156-71.
If a crack is found, before further flight, the engine mount must be repaired or replaced. If the crack length is less than 6mm, the engine mount can be repaired in accordance with the Requirement document. If the crack length is more than 6mm the engine mount must be replaced.
2. If a part number 892.51.0.035.0 engine mount is installed, replace with a different part number engine mount.
Aerospatiale Rallye Series Aeroplanes
AD/MSR/18 Amdt 2 (Continued)
Note 2: DGAC AD 2001-400(A) and AD 1978-205(A) R1 refer.
Compliance: 1. At the next scheduled inspection after 3 October 2001, or before 31 October 2001, whichever occurs first. Thereafter at intervals not to exceed 50 hours time in service.
2. Before further flight after 3 October 2001.
This amendment becomes effective on 3 October 2001.
Background: Cracks have been found on the engine mount.
Amendment 2 is issued in response to new DGAC Airworthiness Directives which update the list of affected engine mounts, increase the frequency of repeat inspections and require the removal from service of a certain part number engine mount.
Amendment 1 of this Airworthiness Directive became effective on 31 May 1978, The original issue of this Airworthiness Directive became effective on 31 May 1972.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 28 September 2001
The above AD is notified in the Commonwealth of Australia Gazette on 3 October 2001.
Overview
The Civil Aviation Safety Authority (CASA) has issued an Airworthiness Directive (AD) AD/MSR/18 Amdt 2 for Aerospatiale Rallye Series Aeroplanes, effective from 3 October 2001. This AD, under the Civil Aviation Regulations 1998, revokes the previous amendment (AD/MSR/18 Amdt 1) and addresses the identified unsafe condition related to engine mounts. This directive is issued in response to cracks found on the engine mounts and aims to correct the unsafe condition by specifying mandatory inspections and, where necessary, repairs or replacements of engine mounts. The AD applies to specific models of Aerospatiale Rallye Series Aeroplanes and outlines the requirements for inspecting and maintaining the engine mounts, as well as the compliance timeline for these actions.
Scope and Application
The Airworthiness Directive (AD) AD/MSR/18 Amdt 2 issued by the Civil Aviation Safety Authority (CASA) applies to certain Aerospatiale Rallye Series Aeroplanes with specific engine mount part numbers. This directive mandates the inspection and necessary repairs or replacement of engine mounts to address identified safety concerns. The AD specifically applies to aircraft models Rallye 180, Rallye 150, Rallye 110ST, MS 892, MS 893, and MS 894 A and MS 894 E with serial numbers ranging from 1005 to 2204, excluding agricultural aircraft, that are equipped with engine mount part numbers 887.51.0.030.0, 892.51.0.033.0, 85.51.0.001.0, 892.51.0.001.0, 892.51.0.053.0, 892.51.0.060.0, or 892.51.0.035.0. Additionally, it applies to aircraft with the engine mount part number 892.51.0.035.0 installed between 1 April 1978 and 6 November 1978, or by application of Socata Information Bulletin No. 156-71 or DGAC AD 78-149(A). The directive aims to rectify unsafe conditions by requiring inspections, repairs, or replacements of engine mounts based on the identified crack lengths, with a compliance timeline set to ensure safety standards are met. This AD is a legislative instrument under the Civil Aviation Regulations 1998, and its provisions are applicable nationally within Australia.
Key Provisions
The Airworthiness Directive (AD) AD/MSR/18 Amdt 2 issued under section 39.1 (1) of the Civil Aviation Regulations 1998 (CAR 1998) applies to specific Aerospatiale Rallye Series Aeroplanes models, including Rallye 180, Rallye 150, Rallye 110ST, MS 892, MS 893, and MS 894 A and MS 894 E aircraft, with certain serial numbers and engine mount specifications. This directive revokes the previous amendment, AD/MSR/18 Amdt 1, and mandates specific actions to address safety concerns related to engine mount cracks. The AD applies to aircraft fitted with particular engine mount part numbers, excluding agricultural aircraft with a specific Socata kit (section 1).
The AD requires two primary actions: Firstly, aircraft owners and operators must inspect the engine mount for cracks and follow the actions outlined in Socata Service Bulletin Rallye aircraft No. 156-71. If a crack is detected, the engine mount must either be repaired or replaced before further flight. Cracks less than 6mm can be repaired according to the directive's requirements, while those longer than 6mm necessitate replacement. Secondly, aircraft fitted with engine mount part number 892.51.0.035.0 must replace the mount with a different part number (section 2). Compliance with these requirements must occur at the next scheduled inspection after 3 October 2001, or before 31 October 2001, and then at intervals not exceeding 50 hours in service (section 1). For aircraft already in flight after 3 October 2001, compliance is necessary before further flight (section 2).
Failure to comply with the AD can result in serious consequences. Aircraft found to be non-compliant with the AD's requirements may face grounding, which could lead to operational disruptions and potential financial losses for the operator. Furthermore, operating an aircraft that does not meet the AD's airworthiness standards poses significant safety risks, potentially leading to severe accidents. The AD serves as a legal mandate, and non-compliance can result in enforcement actions by the Civil Aviation Safety Authority (CASA), including fines, penalties, or even criminal charges in severe cases, depending on the extent of the non-compliance and its impact on aviation safety (section 3).