AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/LYC/107 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.
Lycoming Piston Engines
AD/LYC/107
Amdt 2
Crankshaft Replacement 12/2002 DM
Applicability: 1. Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and listed by engine serial number in Table 1 of Textron Lycoming Mandatory Service Bulletin (MSB) 552; and
2. Text ron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater and incorporating a crankshaft listed by crankshaft serial number in Table 2 of Textron Lycoming MSB 552; and
3. Textron Lycoming IO-540 series engines modified under a Supplemental Type Certificate (STC) listed in Table 1 of this directive to incorporate a turbocharger, regardless of the rated horsepower.
Note 1: Applicable IO-540 powered aircraft include the Ted Smith/Piper Aerostar 601 and 601P models.
Table 1. List of STC Numbers |
SA000214DE | SA00356DE | SA01925AT | SA09650SC |
SA469NE | SA2062WE | SA2118NM | SE2122WE |
SA2123NM | SA257CE | SA2657WE | SA2082WE |
SA305SO | SA3513WE | SA3719SW | SA385WE |
SA4942NM | SA529WE | SA530WE | SA539WE |
SA5699NM | SA811WE | SA840WE | SA909WE |
SA978WE | SE00357DE | SE01949AT | SE1657NM |
SE978NM | SE17WE | SE21WE | SE22WE |
SE4157NM | SE5869SW | SE40WE | SE60WE |
SE6WE | SE7734SW | SE81WE | SA01925AT |
SA1648NM | SA4156NM | SA1747CE | SE4941NM |
SA2656WE | SA000214DE | | |
Lycoming Piston Engines
AD/LYC/107 Amdt 2 (continued)
Requirement: 1. MSB 552 listed TIO-540 and LTIO-540 engines: Replace the crankshaft in accordance with the requirements of Textron Lycoming MSB 552.
2. MSB 552 listed TIO-540 and LTIO-540 crankshafts: Replace the crankshaft in accordance with the requirements of Textron Lycoming MSB 552.
3. IO-540 series engines incorporating an turbocharger STC:
- Determine the serial number of the crankshaft; and
b. If listed in Table 2 of Textron Lycoming MSB 552, replace the crankshaft in accordance with the requirements of Textron Lycoming MSB 552.
Note 2: Prior replacement of a crankshaft in accordance with either MSB 550 or 552 constitutes compliance with the requirements of this directive.
Note 3: FAA Airworthiness Directive 2002-19-03 Amdt 39-12883 refers.
Compliance: Unless previously accomplished:
- Installed engines: Within 5 hours time in service from the effective date of this Directive.
b. Spare engines: Before installation in an aircraft. This Amendment becomes effective on 2 October 2002.
Background: This Directive was originally issued to require certain crankshafts to be removed from service. The requirement follows advice from the engine manufacturer of a crankshaft material defect being identified in the investigation of a number of engine failures. This amendment increases the engines applicable to include IO-540 engines incorporating an STC approved turbocharger.
Lycoming Piston Engines
AD/LYC/107 Amdt 2 (continued)
Amendment 1 of this Airworthiness Directive became effective on 21 August 2002.
The original issue of this Airworthiness Directive became effective on 20 February 2002.
James Coyne
Delegate of the Civil Aviation Safety Authority 26 September 2002
The above AD is notified in the Commonwealth of Australia Gazette on 2 October 2002.
Overview
The Civil Aviation Safety Authority (CASA) introduced the Civil Aviation Regulations 1988 (CAR) to ensure the safety and efficiency of civil aviation in Australia. In response to identified safety concerns, CASA issued Airworthiness Directive (AD) LYC/107 Amdt 2, which became effective on 2 October 2002. This AD targets Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater, as well as Textron Lycoming IO-540 series engines modified to incorporate a turbocharger, irrespective of their rated horsepower. The directive mandates the replacement of specific crankshafts identified in Textron Lycoming’s Mandatory Service Bulletin 552 to mitigate the risk of engine failure due to a crankshaft material defect. CASA’s policy objective is to enhance aviation safety by ensuring that affected aircraft comply with the specified maintenance actions within stipulated timeframes.
Scope and Application
The Airworthiness Directive (AD) issued under the Civil Aviation Regulations 1998 applies specifically to certain Textron Lycoming piston engine models, including the TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater, as well as IO-540 series engines modified with a turbocharger. The directive is designed to address an identified unsafe condition related to crankshaft material defects, which were found to be contributing to engine failures. The AD mandates that the affected engines or crankshafts be replaced according to the guidelines provided in Textron Lycoming's Mandatory Service Bulletin 552, with specific timelines for compliance depending on whether the engines are installed or in spare inventory. This directive is applicable nationally within Australia and extends its requirements to both domestic and international aircraft operating within Australian jurisdiction, ensuring a uniform approach to airworthiness standards across the industry. Exemptions or exclusions from the AD are not explicitly mentioned, suggesting that all specified engines and crankshafts must comply unless otherwise detailed in subordinate instruments or specific regulatory provisions.
Key Provisions
The primary sections of the AD/LYC/107 Amdt 2 (sections 1, 2, and 3) identify the applicability, requirement, and compliance timeframes for the directive. Specifically, section 1 outlines which engines are subject to the directive, including Textron Lycoming TIO-540 and LTIO-540 series engines with a rated take-off power of 300 horsepower or greater, as well as Textron Lycoming IO-540 series engines modified under a Supplemental Type Certificate to incorporate a turbocharger. Section 2 details the actions that need to be taken, such as replacing the crankshaft in accordance with Textron Lycoming MSB 552. Section 3 specifies the compliance timeframes, requiring installed engines to be addressed within 5 hours of the directive's effective date, and spare engines to be addressed before installation in an aircraft.
The obligations and requirements imposed by this AD on the parties and entities it governs are clearly defined. Operators of Textron Lycoming TIO-540, LTIO-540, and IO-540 series engines must comply with the crankshaft replacement directive outlined in Textron Lycoming MSB 552. For installed engines, this must occur within 5 hours of the directive's effective date. For spare engines, compliance requires that the crankshaft replacement be completed before the engine is installed in an aircraft. Failure to comply with these requirements may result in the aircraft being deemed non-airworthy, leading to potential grounding and operational disruptions.
The AD also outlines potential civil and criminal consequences for non-compliance with its provisions. While the specific penalties are not detailed within the text, non-compliance with airworthiness directives can result in significant penalties under the Civil Aviation Act 1988 and Civil Aviation Regulations 1988. These can include substantial fines, enforcement actions, and potential criminal charges if the non-compliance leads to an unsafe condition that endangers flight safety. Operators and maintenance personnel are therefore under a legal obligation to ensure strict adherence to the AD to avoid these serious consequences.