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AD/CON/86 - ECI Cylinder Assemblies
Teledyne Continental Motors Piston EnginTeledyne Continental Motors Piston Engines
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Teledyne Continental Motors Piston Engines
| AD/CON/86 | ECI Cylinder Assemblies | 5/2006 |
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| Applicability: | Teledyne Continental Motors (TCM) model 520 and 550 series piston engines with certain Engine Components, Inc. (ECi) cylinders, part number (P/N) AEC631397, installed; andTCM TSIO-520-NB, -VB, and -WB engines that are modified by FAA supplemental type certificate (STC) SE4327SW, STC SE09104SC, or STC SE09261SC for operation at 325 HP or greater (also called RAM TSIO-520-NB, -VB, or -WB Series III, IV, and VII piston engines). |
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| Requirement: | 1. Determine the serial number (S/N) of ECi P/N AEC631397 cylinders per FAA Airworthiness Directive (AD) 2004-08-10. If the SN is 1043 or lower, or if it is 7709 or higher, no further action is required.2. For cylinder serial numbers 1044 through 7708, refer to the FAA AD 2004-08-10 to determine if cylinders need to be replaced. Replace cylinders, if required by the provisions of FAA AD.Note 1: FAA Airworthiness Directive (AD) 2004-08-10 amendment 39-13579 refers.Note 2: ECi Mandatory Service Bulletin S.I. No. 04-1 also pertains to the subject of this AD. |
| Compliance: | 1. Unless already accomplished, within 50 hours time-in-service (TIS) or one month after the effective date of this AD, whichever occurs first.2. Before further flight. |
| This Airworthiness Directive becomes effective on 11 May 2006. | |
| Background: | This AD results from reports of 34 failures of ECi cylinder head. |
| The requirements of this AD are aimed at preventing loss of engine power due to cracks in the cylinder head and possible engine failure caused by separation of a cylinder head. |
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James Coyne
Delegate of the Civil Aviation Safety Authority
17 March 2006