Division Lycoming Piston Engines - AD/LYC/113 Amdt 2 - ECi Cylinder Assemblies - Lycoming Piston Engines

Lycoming Piston Engines

AD/LYC/113 Amdt 2	ECi Cylinder Assemblies	8/2006

Applicability:	Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, parallel valve, reciprocating engines that are:A. specified in Table 1 of FAA AD 2006-12-07; andB. fitted with Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1; andC. with serial numbers (SNs) 1 through 9879 installed. (SN may have an "L" prefix for a long reach spark plug).Note 1: The set of numbers appearing on the cylinder, below and to the left of the SN, in the form of "12345-67" is not used for determining applicability.
Requirement:	Engines Not Repaired or Overhauled Since NewIf your engine has not been overhauled or had any major repair since new, no further action is required.Engines Overhauled or Repaired Since New1. If your engine was overhauled or repaired since new, determine if ECi cylinder assemblies, P/N AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1 and SNs 1 through 9879 (SN may have an "L" prefix for a long reach spark plug) are installed on your engine, as follows:a. Inspect the engine log books and maintenance records for reference to the subject ECi cylinder assemblies.b. If the engine log books and maintenance records did not record the P/N and SN of the cylinder assemblies, visually inspect the cylinder assemblies and verify the P/N and SN of the cylinder assemblies.c. If the cylinder assemblies are not ECi, P/N AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1, no further action is required.

Applicability:

Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, parallel valve, reciprocating engines that are:A. specified in Table 1 of FAA AD 2006-12-07; andB. fitted with Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1; andC. with serial numbers (SNs) 1 through 9879 installed. (SN may have an "L" prefix for a long reach spark plug).Note 1: The set of numbers appearing on the cylinder, below and to the left of the SN, in the form of "12345-67" is not used for determining applicability.

Requirement:

Engines Not Repaired or Overhauled Since NewIf your engine has not been overhauled or had any major repair since new, no further action is required.Engines Overhauled or Repaired Since New1. If your engine was overhauled or repaired since new, determine if ECi cylinder assemblies, P/N AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1 and SNs 1 through 9879 (SN may have an "L" prefix for a long reach spark plug) are installed on your engine, as follows:a. Inspect the engine log books and maintenance records for reference to the subject ECi cylinder assemblies.b. If the engine log books and maintenance records did not record the P/N and SN of the cylinder assemblies, visually inspect the cylinder assemblies and verify the P/N and SN of the cylinder assemblies.c. If the cylinder assemblies are not ECi, P/N AEL65102 series "Classic Cast", having casting head markings EC 65099-REV-1, no further action is required.

2. If any cylinder assembly is an ECi P/N AEL65102 series "Classic Cast", with casting head markings EC 65099-REV-1 and a SN 1 through 9879, replace the cylinder assembly. (SN may have an "L" prefix for a long reach spark plug).Definition of a Replacement Cylinder AssemblyFor the purpose of this AD, a replacement cylinder assembly is defined as follows:i. A serviceable cylinder assembly made by Lycoming Engines.ii. A serviceable FAA-approved, Parts Manufacturer Approval cylinder assembly from another manufacturer.iii. A serviceable ECi cylinder assembly, P/N AEL65102 series, "Titan", having casting P/N AEL85099.iv. A serviceable ECi cylinder assembly, P/N AEL65102 series “Classic cast” having casting head markings EC 65099-REV-1 that has a SN 9880 or higher. (SN may have an "L" prefix for a long reach spark plug).3. Do not install any ECi cylinder assembly, P/N AEL65102, having casting head markings EC 65099-REV-1, that has a SN 1 through 9879 onto any engine. (SN may have an "L" prefix for a long reach spark plug).Note 2: FAA AD 2006-12-07 amendment 39-14632 refers. FAA AD 2006-12-07 supersedes AD 2005-26-10.Note 3: ECi Mandatory Service Bulletin 05-8 Revision 2 dated 28 February 2006 pertains to the subject of this AD.

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