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Commonwealth legislation
This Act has been repealed and is no longer in force. It is retained for historical reference.
This Airworthiness Directive requires operators of Lycoming 320/360/540 “parallel valve” engines that have been overhauled or had cylinders replaced to check maintenance records for ECi cylinder assemblies (P/N AEL65102 with head P/N AEL85099) within specified serial‑number ranges. Identified cylinders must have initial and repetitive visual inspections and compression tests, be replaced at reduced time‑in‑service limits, and may not be repaired or reinstalled.
It affects aircraft and helicopter owners, maintenance organisations and parts suppliers, who will bear inspection, replacement and grounding costs and must increase inspection frequency to reduce the risk of cylinder‑head separation.
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Direct links to the current provisions in AD/LYC/119 - ECi Cylinder Assemblies.
Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.
| AD/LYC/119 | ECi Cylinder Assemblies | 12/2008 DM |
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<table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-bottom:12pt"><span>Lycoming Engine</span><span>s (formerly Textron Lycoming) models 320, 360, and 540 series, ''Parallel Valve'', reciprocating engines listed in Table 1 of this AD, with Engine Components, Inc (ECi) cylinder assembly, part number (P/N) AEL65102 series “Titan”, and with cylinder head, P/N AEL85099, with the following serial numbers (S/N) installed.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>a.</span><span style="width:12.97pt; text-indent:0pt; display:inline-block"> </span><span>Cylinder assembly S/N 1138-02 through SN 35171- 22, (referred to in this AD as Group ''A'' cylinder assemblies); and</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>b.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>S/N 35239-01 through SN 37016-28 (referred to in this AD as Group ''B'' cylinder assemblies).</span></p><p class="Note" style="margin-top:12pt; margin-bottom:12pt"><span>Note 1: </span><span></span><span>The cylinder assembly P/N is at the crankcase end of the cylinder assembly, and might be difficult to see. </span><span></span><span>As a guide in determining if your cylinder assemblies are affected, all affected cylinder assemblies have cylinder head P/N AEL85099. </span><span></span><span>The cylinder head P/N is at the top the cylinder head, near the intake and exhaust valve springs, and is easier to locate than the cylinder assembly P/N.</span></p><p class="Note" style="margin-top:12pt; margin-bottom:12pt"><span>Note 2:</span><span> </span><span>The set of numbers appearing on the cylinder, above and to the left of the SN, in the form of ''123456'' is not used for determining applicability.</span></p><p style="margin-top:12pt; margin-bottom:12pt"><span style="font-weight:bold">This AD is not applicable to engines not overhauled or which have not had any cylinder assemblies replaced since new.</span></p><p style="margin-top:12pt; text-align:center"><span style="font-weight:bold">Table 1 - Engine Models</span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:98.3pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt; text-align:center"><span style="font-weight:bold">Cylinder Assembly Part Number:</span></p></td><td style="width:306.35pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt; text-align:center"><span style="font-weight:bold">Installed on Engine Models:</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt; text-align:center"><span>AEL65102-NST04</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-320</span><span>-A1B, A2B, A2C, A2D, A3A, A3B, B2B, B2C, B2D, B2E, B3B, B3C, C2B, C2C, C3B, C3C, D1A, D1AD, D1B, D1C, D1D, D1F, D2A, D2B, D2C, D2F, D2G, D2H, D2J, D3G, E1A, E1B, E1C, E1F, E1J, E2A, E2B, E2C, E2D, E2E, E2F, E2G, E2H, E3D, E3H</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">IO-320</span><span>-A1A, A2A, B1A, B1B, B1C, B1D, B1E, B2A, D1A, D1AD, D1B, D1C, E1A, E1B, E2A, E2B</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">AEIO-320</span><span>-D1B, D2B, E1A, E1B, E2A, E2B</span></p></td></tr></tbody></table><p style="margin-top:2pt; margin-left:5.65pt; margin-bottom:2pt"><span style="font-weight:bold"></span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:98.3pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span></span></p></td><td style="width:306.35pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">AIO-320</span><span>-A1A, A1B, A2A, A2B, B1B, C1B</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">LIO-320</span><span>-B1A</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST05</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">IO-320</span><span>-C1A, C1B, C1F, F1A</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">LIO-320</span><span>-C1A</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST06</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-320</span><span>-A1A, A2A, A2B, A2C, A3A, A3B, A3C, E1A, E1B, E2A, E2C, (also,</span><span> an O-320 model with no suffix)</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">IO-320</span><span>-A1A, A2A</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST07</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">IO-320</span><span>-B1A, B1B</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">LIO-320</span><span>-</span><span>B1A</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST08</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span style="font-weight:bold">O-320</span><span>-B1A, B1B, B2A, B2B, B3A, B3B, B3C, C1A, C1B, C2A, C2B, C3A, C3B, C3C, D1A, D1B, D2A, D2B, D2C</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST10</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-360</span><span>-A1A, A1C, A1D, A2A, A2E, A3A, A3D, A4A, B1A, B1B, B2A, B2B, C1A, C1C, C1G, C2</span><span>A, C2B, C2C, C2D, D1A, D2A, D2B</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">IO-360</span><span>-B1A, B1B, B1C</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">HO-360</span><span>-A1A, B1A, B1B</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">HIO-360</span><span>-B1A, B1B</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">AEIO-360</span><span>-B1B</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">O-540</span><span>-A1A, A1A5, A1B5, A1C5, A1D, A1D5, A2B, A3D5, A4A5, A4B5, A4C5, A4D5, B1A5, B1B5, B1D5, B2A5, B2B5, B2C5, B2C5D, B4A5, B4B5, B4B5D, D1A5, E1A, E4A5, E4B</span><span>5, E4C5, F1A5, F1B5, G1A5, G2A5</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">IO-540</span><span>-C1B5, C1C5, C2C, C4B5, C4B5D, C4C5, D4A5, D4B5, N1A5, N1A5D</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST12</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-360</span><span>-</span><span>A1A, A1AD, A1D, A1F, A1F6, A1F6D, A1G, A1G6, A1G6D, A1H, A1H6, A1J, A1LD, A1P, A2A, A2D, A2F, A2G, A2H, A3A, A3AD, A3D, A4A, A4AD, A4D, A4G, A4J, A4JD, A4K, A4M, A4N, A4P, A5AD, B1A, B2C, C1A, C1C, C1E, C1F, C1G, C2A, C2B, C2C, C2D, C2E, C4F, C4P, D2A, F1A6, G1A6</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">HO-360</span><span style="font-weight:bold">-</span><span>C1A</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">LO-360</span><span>-A1G6D, A1H6</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">HIO-360</span><span>-B1A, B1B, G1A</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">LTO-360</span><span>-A1A6D</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">TO-360</span><span>-A1A6D</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">IO-360</span><span>-B1B, B1BD, B1D, B1E, B1F, B1F6, B1G6, B2E, B2F, B2F6, B4A, E1A, L2A, M1A, M1B</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">AEIO-360</span><span>-B1B, B1D, B1E, B1F, B1F6, B1G6, B1H, B2F, B2F6, B4A, H1A, H1B</span></p></td></tr></tbody></table><p style="margin-top:2pt; margin-left:5.65pt; margin-bottom:2pt"><span style="font-weight:bold"></span></p><table cellspacing="0" cellpadding="0" style="margin-top:0pt; margin-bottom:0pt; border:0.75pt solid #000000; border-collapse:collapse"><tbody><tr><td style="width:98.3pt; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span></span></p></td><td style="width:306.35pt; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-540</span><span>-A4D5, B2B5, B2C5, B2C5D, B4B5, B4B5D, E4A5, E4B5, E4B5D, E4C5, G1A5, G1A5D, G2A5, H1A5, H1A5D, H1B5, H1B5D, H2A5, H2A5D, H2B5D</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">IO-540</span><span>-C4B5, C4B5D, C4D5, C4D5D, D4A5, D4B5, D4C5, N1A5, N1A5D, T4A5D, T4B5, T4B5D, T4C5D, V4A5, V4A5D</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">AEIO-540</span><span>-D4A5, D4B5, D4C5, D4D5</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST26</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">IO-540</span><span>-J4A5, R1A5</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">TIO-540</span><span>-C1A, E1A, G1A, H1A</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST38</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">IO-360</span><span>-F1A</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">TIO-540</span><span>-AA1AD, AB1AD, AB1BD, AF1A, AG1A, AK1A, C1A, C1AD, K1AD</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">LTIO-540</span><span>-K1AD</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST43</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:4pt"><span style="font-weight:bold">O-360</span><span>-J2A</span></p><p style="margin-top:4pt; margin-bottom:4pt"><span style="font-weight:bold">O-540</span><span>-F1B5, J1A5D, J1B5D, J1C5D, J1D5D, J2A5D, J2B5D, J2C5D, J2D5D, J3A5, J3A5D, J3C5D</span></p><p style="margin-top:4pt; margin-bottom:2pt"><span style="font-weight:bold">IO-540</span><span>-AB1A5, W1A5, W1A5D, W3A5D</span></p></td></tr><tr><td style="width:98.3pt; border-top:0.75pt solid #000000; border-right:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span>AEL65102-NST44</span></p></td><td style="width:306.35pt; border-top:0.75pt solid #000000; border-left:0.75pt solid #000000; border-bottom:0.75pt solid #000000; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"><p style="margin-top:2pt; margin-bottom:2pt"><span style="font-weight:bold">O-540</sp
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