AD 2005-26-10 Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies

This AD applies to Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, parallel valve, reciprocating engines specified in Table 1 of this AD, with Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series “Classic Cast”, with casting P/N AEL65099 and serial numbers (SNs) 1 through 9879, installed. Table 1.—Engine Models Cylinder head part number: Installed on engine models AEL65102-NST04 O-320-A1B, A2B, A2C, A2D, A3A, A3B, B2B, B2C, B3B, B3C, C2B, C2C, C3B, C3C, D1A, D1AD, D1B, D1C, D1D, D1F, D2A, D2B, D2C, D2F, D2G, D2H, D2J, D3G, E1A, E1B, E1C, F1F, E1J, E2A, E2B, E2C, E2D, E2E, E2F, E2G, E2H, E3D, E3H   IO-320-A1A, A2A, B1A, B1B, B1C, B1D, B1E, B2A, C1B, D1A, D1AD, D1B, D1C, E1A, E1B, E2A, E2B   AEIO-320-D1B, D2A, D2B, E1A, E1B, E2B   AIO-320-A1A, A1B, A2A, A2B, B1B, C1B   LIO-320-B1A AEL65102-NST05 O-320-C1A, C1F, F1A   LIO-320-C1A AEL65102-NST06 O-320-A1A, A2A, A2B, A2C, A3A, A3B, A3C, E1A, E1B, E2A, E2C AEL65102-NST07 O-320-A2A, B1A, B1B AEL65102-NST08 O-320-C1A, C1B, C2A, C2B, C3A, C2B, C3C AEL65102-NST10 O-360-A1A, A1C, A1D, A2A, A2E, A3A, A3D, A4A, C1A, C1C, C1G, C2A, C2B, C2C, C2D, B1A, B1B, B2A, B2B, D1A, D2A, D2B   IO-360-B1A, B1B, B1C   HO-360-A1A, B1A, B1B   HIO-360-B1A, B1B   AEIO-360-B1B   AEIO-540-A1A, A1A5, A1B5, A1C5, A1D, A1D5, A2B, A3D5, A4A5, A4B5, A4C5, A4D5, B1A5, B1B5, B1C5, B2C5D, B4A5, B4A5D, D1A5, E1A, E4A5, E4B5, E4C5, F1A5, F1B5, G1A5, G2A5   IO-540-C1B5, C1C5, C2C, C4B5, C4B5D, C4C5, D4A5, D4B5, N1A5, N1A5D AEL65102-NST12 O-360-A1A, A1AD, A1C, A1D, A1F, A1F6, A1F6D, A1G, A1G6, A1G6D, A1H, A1H6, A1J, A1LD, A2A, A2D, A2F, A2G, A2H, A3A, A3AD, A3D, A4A, A4AD, A4D, A4G, A4J, A4JD, A4K, A4M, A4N, A5AD, B1A, C1A, C1E, C1F, C1G, C2A, C2B, C2C, C2D, C2E, D2A, F1A6, G1A6   TIO-360-A1A6D   LTO-360-A1A6D   IO-360-A1G6D, A1H6, B1B, B1BD, B1D, B1E, B1F, B1F6, B2E, B2F, B2F6, B4A, E1A, E4A, F1A   IHO-360-B1A, B1B   AEIO-360-B1B, B1D, B1F, B1F6, B1G6, B2F, B2F6, B4A, H1A   O-540-A4D5, B2B5, B2C5, B2C5D, B4B5, B4B5D, E4A5, E4B5, E4B5D, E4C5, G1A5, G1A5D, G2A5, H1A5, H1A5D, H1B5, H1B5D, H2A5, H2A5D, H2B5D   IO-540-C4A5, C4B5, C4B5D, C4D5D, D4A5, D4B5, D4C5, N1A5, T4A5, T4A5D, T4B5D, T4C5D, V4A5D   AEIO-540-D4A5, D4B5, D4C5 AEL65102-NST26 IO-540-J4A5, R1A5   TIO-540-C1A, E1A, G1A, H1A AEL65102-NST38 (T)IO-360-F1A   TIO-360-AA1AD, AB1AD, C1A, C1AD, AF1A, K1AD   LTIO-540-K1AD AEL65102-NST43 O-540-J1A5D, J1B5D, J1C5D, J1D5D, J2A5D, J2B5D, J2C5D, J3A5, J3A5D, J3C5D   IO-540-L3C5D, W1A5D, W3A5D AEL65102-NST44 O-540-L3C5D For information, the subject engines are installed on, but not limited to, the aircraft listed in the following Table 2: Table 2.—Engines Installed on, But Not Limited to     O-320-A1A Piper Aircraft: Tri-Pacer (PA-22 “150”, PA-22S “150”), Apache (PA-23), Pawnee (PA-25)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   Mooney Aircraft: Mark (20A)   Dinfia: Ranquel (1A-46)   Simmering-Graz Pauker: Flamingo (SGP-M-222)   Aviamilano: Scricciolo (P-19)   Vos Helicopter Co.: Spring Bok O-320-A1B Piper Aircraft: Tri-Pacer (PA-22 “150”, PA-22S “150”), Apache (PA-23)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   S.O.C.A.T.A.: Horizon (Gardan) O-320-A2A Piper Aircraft: Tri-Pacer (PA-22 “150”, PA-22S “150”), Agriculture (PA-18A “150”) Super Cub (PA-18 “150”), Caribbean (PA-22 “150”), Pawnee (PA-25)   Intermountain Mfg. Co.: Call Air Texas (A-5, A-5T)   Lake Aircraft: Colonial (C-1)   Rawdon Bros.: Rawdon (T-1, T-15, T-15D)   Shinn Engineering: Shinn (2150-A)   Dinfia: Ranquel (1A)-46)   Neiva: (1PD-5802)   Sud: Gardan-Horizon (GY-80)   LaVerda: Falco (F8L Series II, America)   Malmo: Vipan (MF1-10)   Kingsford Smith: Autocrat (SCRM-153)   Aero Commander: 100 O-320-A2B Piper Aircraft: Tri-Pacer (PA-22 “150”, PA-22S “150”), Cherokee (PA-28 “150”), Super Cub (PA-18 “150”)   Champion Aircraft: Challenger (7GCA, 7GCB, 7KC), Citabria (7GCAA, 7GCRC), Agriculture (7GCBA)   Beagle: Pup (150)   Artic: Interstate S1B2   Robinson: R-22 Varga: Kachina 2150A O-320-A2C Robinson: R-22   Cicare: Cicare AG   Bellanca Aircraft: Citabria 150 (7GCAA), Citabria 150S (7GCBC) O-320-A2D Piper Aircraft: Apache (PA-23) O-320-A3A Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   Corben-Fettes: Globe Special (Globe GC-1B) O-320-A3B Piper Aircraft: Apache (PA-23)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   Teal II: TSC (1A2) O-320-B1A Piper Aircraft: Apache (PA-23 “160”)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   Malmo: Vipan (MF1-10) O-320-B1B Piper Aircraft: Apache (PA-23 “160”)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B) O-320-B2A Piper Aircraft: Tri-Pacer (PA-22 “160”, PA-22S “160”) O-320-B2B Piper Aircraft: Tri-Pacer (PA-22 “160”, PA-22S “160”)   Beagle: Airedale (D5-160)   Fuji-Heavy Industries: Fuji (F-200)   Uirapuru: Aerotec 122 O-320-B2C Robinson: R-22 O-320-B2D Maule: MX-7-160 O-320-B2E Lycon O-320-B3A Piper Aircraft: Apache (PA-23 “160”)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B) O-320-B3B Piper Aircraft: Apache (PA-23 “160”)   Doyn Aircraft: Doyn-Cessna (170, 170A, 170B)   Sud: Gardan (GY80-160) O-320-C1A Piper Aircraft: Apache (PA-23 “160”)   Riley Aircraft: Rayjay (Apache) O-320-C1B Piper Aircraft: Apache (PA-23 “160”) O-320-C3A Piper Aircraft: Apache (PA-23 “160”) O-320-C3B Piper Aircraft: Apache (PA-23 “160”) O-320-D1A Sud: Gardan (GY-80)   Gyroflug: Speed Cancard   Grob: G115 O-320-D1F Slingsby: T67 Firefly O-320-D2A Piper Aircraft: Cherokee (PA-28S “160”)   Robin: Major (DR400-140B), Chevalier (DR-360), (R-3140)   S.O.C.A.T.A.: Tampico TB9   Slingsby: T67C Firefly   Daetwyler: MD-3-160   Nash Aircraft Ltd.: Petrel   Aviolight: P66D Delta   General Avia: Pinguino O-320-D2B Beech Aircraft: Musketeer (M-23)   Piper Aircraft: Cherokee (PA-28 “160”) O-320-D2J Cessna Aircraft: Skyhawk 172 O-320-D3G Piper Aircraft: Warrior II, Cadet (PA-28-161) O-320-E1A Grob: G115 O-320-E1C M.B.B. (Messerschmitt-Boelkow-Blohm): Monsun (BO-209-B) O-320-E1F M.B.B.: Monsun (BO-209-B) O-320-E2A Piper Aircraft: Cherokee (PA-28 “140”, PA-28 “150”)   Robin: Major (DR-340), Sitar, Bagheera (GY-100-135)   S.O.C.A.T.A.: Super Rallye (MS-886), Rallye Commodore (MS-892)   Siai-Marchetti: (S-202)   F.F.A.: Bravo (AS-202/15)   Partenavia: Oscar (P66B), Bucker (131 APM)   Aeromot: Paulistina P-56   Pezetel: Koliber 150 O-320-E2C Beech Aircraft: Musketeer III (M-23III)   M.B.B.: Monsun (BO-209-B) O-320-E2D Cessna Aircraft: Cardinal (172-I, 177) O-320-E2F M.B.B.: Monsun (BO-209-B), Wassmer Pacific (WA-51) O-320-E2G American Aviation Corp.: Traveler O-320-E3D Piper Aircraft: Cherokee (140)   Beech Aircraft: Sport O-320-H2AD Cessna Aircraft: Skyhawk 172   Partenavia: P-66C IO-320-B2A Piper Aircraft: Twin Comanche (PA-30) IO-320-B1C Hi. Shear: Wing IO-320-B1D Ted Smith Aircraft: Aerostar IO-320-C1A Piper Aircraft: Twin Comanche (PA-30 Turbo) IO-320-D1A M.B.B.: Monsun (BO-209-C) IO-320-D1B M.B.B.: Monsun (BO-209-C) IO-320-E1A M.B.B.: Monsun (BO-209-C) IO-320-E1B Bellanca Aircraft IO-320-E2A Champion Aircraft: Citabria IO-320-E2B Bellanca Aircraft IO-320-F1A CAAR Engineering: Carr Midget LIO-320-B1A Piper Aircraft: Twin Comanche (PA-39) LIO-320-C1A Piper Aircraft: Twin Comanche (PA-39) AIO-320-B1B M.B.B.: Monsun (BO-209-C) AEIO-320-D1B Slingsby: T67M Firefly AEIO-320-D2B Hundustan Aeronautics Ltd.: HT-2 AEIO-320-E1A Bellanca Aircraft   Champion Aircraft AEIO-320-E1B Bellanca Aircraft   Champion Aircraft: Decathalon (8KCAB-CS) AEIO-320-E2B Bellanca Aircraft   Champion Aircraft: Decathalon (8KCAB) O-320-A1A Riley Aircraft: Riley Twin O-360-A1A Beech Aircraft: Travel Air (95, B-95)   Piper Aircraft: Comanche (PA-24)   Intermountain Mfg. Co.: Call Air (A-6)   Lake Aircraft: Colonial (C-2, LA -4, 4A or 4P)   Doyn Aircraft: Doyn-Cessna (170B, 172, 172A, 172B)   Mooney Aircraft: Mark “20B” (M-20B)   Earl Horton: Pawnee (Piper PA-25)   Dinfia: Ranquel (1A-51)   Neiva: (1PD-5901)   Regente: (N-591)   Wassmer: Super 4 (WA-50A), Sancy (WA-40), Baladou (WA-40), Pariou (WA-40)   Sud: Gardan (GY-180)   Bolkow: (207)   Partenavia: Oscar (P-66)   Siai-Marchetti: (S-205)   Procaer: Picchio (F-15-A)   S.A.A.B.: Safir (91-D)   Malmo: Vipan (MF-10B)   Aero Boero: AB-180   Beagle: Airedale (A-109)   DeHavilland: Drover (DHA-3MK3)   Kingsford-Smith: Bushmaster (J5-6)   Aero Engine Service Ltd.: Victa (R-2) O-360-A1AD S.O.C.A.T.A.: Tabago TB-10 O-360-A1D Piper Aircraft: Comanche (PA-24)   Lake Aircraft: Colonial (LA -4, 4A or 4P)   Doyn Aircraft: Doyn-Beech (Beech 95)   Mooney Aircraft: Master “21” (M-20E), Mark “20B”, “20D”, (M20B, M20C), Mooney Statesman (M-20G)   Dinfia: Querandi (1A-45)   Wassmer: (WA-50)   Malmo: Vipan (MF1-10)   Cessna Aircraft: Skyhawk   Doyn Aircraft: Doyn-Piper (PA-23 “160”) O-360-A1F6 Cessna Aircraft: Cardinal O-360-A1F6D Cessna Aircraft: Cardinal 177   Teal III: TSC (1A3) O-360-A1G6 Aero Commander O-360-A1G6D Beech Aircraft: Duchess 76 O-360-A1H6 Piper Aircraft: Seminole (PA-44) O-360-A1LD Wassmer: Europa WA-52 O-360-A1P Aviat: Husky O-360-A2A Center Est Aeronautique: Regente (DR-253)   S.O.C.A.T.A.: Rallye Commodore (MS-893)   Societe Aeronautique Normande: Mousquetaire (D-140)   Bolkow: Klemm (K1-107C)   Partenavia: Oscar (P-66)   Beagle: Husky (D5-180) (J1-U) O-360-A2D Piper Aircraft: Comanche (PA-24), Cherokee “C” (PA-28 “180”)   Mooney Aircraft: Master “21” (M-20D), Mark “21” (M-20E) O-360-A2E Std. Helicopter O-360-A2F Aero Commander: Lark (100)   Cessna Aircraft: Cardinal O-360-A2G Beech Aircraft: Sport O-360-A3A C.A.A.R.P.S.A.N.: (M-23III)   Societe Aeronautique Normande: Jodel (D-140C)   Robin: Regent (DR400/180), Remorqueur (DR400/180R). R-3170   S.O.C.A.T.A.: Rallye 180GT, Sportavia Sportsman (RS-180)   Norman Aeroplace Co.: NAC-1 Freelance   Nash Aircraft Ltd.: Petrel O-360-A3AD S.O.C.A.T.A.: TB-10   Robin: Aiglon (R-1180T) O-360-A4A Piper Aircraft: Cherokee “D” (PA-28 “180”) O-360-A4D Varga: Kachina O-360-A4G Beech Aircraft: Musketeer Custom III O-360-A4K Grumman American: Tiger   Beech Aircraft: Sundowner 180 O-360-A4M Piper Aircraft: Archer II (PA-28 “18”)   Valmet: PIK-23 O-360-A4N Cessna Aircraft: 172 (Optional) O-360-A4P Penn Yan: Super Cub Conversion O-360-A5AD C. Itoh and Co.: Fuji FA-200 O-360-B2C Seabird Aviation: SB7L O-360-C1A Intermountain Mfg. Co.: Call Air (A-6) O-360-C1E Bellanca Aircraft: Scout (8GCBC-CS) O-360-C1F Maule: Star Rocket MX-7-180 O-360-C1G Christen: Husky (A-1) O-360-C2B Hughes Tool Co.: (269A) O-360-C2D Hughes Tool Co.: (269A) O-360-C2E Hughes Tool Co.: (YHO-2HU) Military   Bellanca Aircraft: Scout (8GCBC FP) O-360-C4F Maule: MX-7-180A O-360-C4P Penn Yan: Super Cub Conversion O-360-E1A6D Piper Aircraft: Seminole (PA-44 “180”) O-360-F1A6 Cessna Aircraft: Cutlass RG O-360-J2A Robinson: R22 IO-360-B1A Beech Aircraft: Travel-Air (B-95A)   Doyn Aircraft: Doyn-Piper (PA-23 “200”) IO-360-B1B Beech Aircraft: Travel-Air (B-95B)   Doyn Aircraft: Doyn-Piper (PA-23 “200”)   Fuji: (FA-200) IO-360-B1D United Consultants: See-Bee IO-360-B1E Piper Aircraft: Arrow (PA-28 “180R”) IO-360-B1F Utva: 75 IO-360-B2E C.A.A.R.P. C.A.P. (10) IO-360-B1F6 Great Lakes: Trainer IO-360-B1G6 American Blimp: Spector 42 IO-360-B2F6 Great Lakes: Trainer LO-360-A1G6D Beech Aircraft: Duchess LO-360-A1H6 Piper Aircraft: Seminole (PA-44) IO-360-E1A T.R. Smith Aircraft: Aerostar IO-360-L2A Cessna Aircraft: Skyhawk C-172 IO-360-M1A Diamond Aircraft: DA-40 IO-360-M1B Vans Aircraft: RV6, RV7, RV8   Lancair: 360 AIO-360-B1B Moravan: Zlin (Z-526-L) AEIO-360-B1F F.F.A.: Bravo (200)   Grob: G115/Sport-Acro AEIO-360-B1G6 Great Lakes AEIO-360-B2F Mundry: CAP-10 AEIO-360-B4A Pitts: S-1S AEIO-360-H1A Bellanca Aircraft: Super Decathalon (8KCAB-180) AEIO-360-H1B American Champion: Super Decathalon TO-360-C1A6D Avions Pierre Robin   Partenavia   Rockwell: 112TC TO-360-F1A6D Maule: Star Rocket (M-5-210TC) TIO-360-C1A6D Partenavia: P68C-TC VO-360-A1A Brantly Hynes Helicopter: (B-2) VO-360-A1B Brantly Hynes Helicopter: (B-2, B2-A). Military (YHO-3BR) VO-360-B1A Brantly Hynes Helicopter: (B-2, B2-A) IVO-360-A1A Brantly Hynes Helicopter: (B2-B) HO-360-B1A Hughes Tool Co.: (269A) HO-360-B1B Hughes Tool Co.: (269A) HO-360-C1A Schweizer: (300C) HIO-360-B1A Hughes Tool Co.: Military (269-A-1). (TH-55A) HIO-360-B1B Hughes Tool Co.: (269A) HIO-360-G1A Schweizer: (CB) O-540-A1A Rhein-Flugzeugbau: (RF-1) O-540-A1A5 Piper Aircraft: Comanche (PA-24 “150”)   Helio: Military (H-250)   Yoeman Aviation: (YA-1) O-540-A1B5 Piper Aircraft: Aztec (PA-23 “250”), Comanche (PA-24 “250”) O-540-A1C5 Piper Aircraft: Comanche (PA-24 “250”) O-540-A1D Found Bros.: (FBA-2C)   Dornier: (DO-28-B1) O-540-A1D5 Piper Aircraft: Aztec (PA-23 “250”), Comanche (PA-24 “250”), Military Aztec (U-11A)   Dornier: (DO-28) O-540-A2B Aero Commander: (500)   Mid-States Mfg. Co.: Twin Courier (H-500), (U-5) O-540-A3D5 Piper Aircraft: Navy Aztec (PA-23 “250”) O-540-B1A5 Piper Aircraft: Apache (PA-23 “235”) O-540-B1B5 Piper Aircraft: Cherokee (PA-24 “250”)   Doyn Aircraft: Doyn-Piper (PA-24 “250”) O-540-B1D5 Wassmer: (WA-421) O-540-B2B5 Piper Aircraft: Pawnee (PA-24 “235”), Cherokee (PA-28 “235”), Aztec (PA-23 “235”)   Intermountain Mfg. Co.: Call Air (A-9)   Rawdon Bros.: Rawdon (T-1)   S.O.C.A.T.A.: Rallye 235CA O-540-B2C5 Piper Aircraft: Pawnee (PA-24 “235”) O-540-B4B5 Piper Aircraft: Cherokee (PA-28 “235”)   Embraer: Corioca (EMB-710)   S.O.C.A.T.A.: Rallye 235GT, Rallye 235C   Maule: Star Rocket (MX-7-235), Super Rocket (M-6-235),   Super Std. Rocket (M-7-235) O-540-E4A5 Piper Aircraft: Comanche (PA-24 “260”)   Aviamilano: Flamingo (F-250)   Siai-Marchetti: (SF-260), (SF-208) O-540-E4B5 Britten-Norman: (BN-2)   Piper Aircraft: Cherokee Six (PA-32 “260”) O-540-E4C5 Pilatus Britten-Norman: Islander (BN-2A-26), Islander (BN-2A-27), Islander II (BN-2B-26), Islander (BN-2A-21), Trislander (BN-2A-Mark III-2) O-540-F1B5 Omega Aircraft: (BS-12D1)   Robinson: (R-44) O-540-G1A5 Piper Aircraft: Pawnee (PA-25 “260”) O-540-H1B5D Aero Boero: 260 O-540-H2A5 Embraer: Impanema “AG”   Gippsland: GA-200 O-540-H2B5D Aero Boero: 260 O-540-J1A5D Maule: Star Rocket (MX-7-235), Super Rocket (M-6-235), Super Std. Rocket (M-7-235) O-540-J3A5 Robin: R-3000/235 O-540-J3A5D Piper Aircraft: Dakota (PA-28-236) O-540-J3C5D Cessna Aircraft: Skylane RG O-540-L3C5D Cessna Aircraft: TR-182, Turbo Skylane RG IO-540-C1B5 Piper Aircraft: Aztec B (PA-23 “250”), Comanche (PA-24 “250”) IO-540-C1C5 Riley Aircraft: Turbo-Rocket IO-540-C4B5 Piper Aircraft: Aztec C (PA-23 “250”), Aztec F   Wassmer: (WA4-21)   Avions Pierre Robin: (HR100/250)   Bellanca Aircraft: Aries T-250   Aerofab: Renegade 250 IO-540-C4D5 S.O.C.A.T.A.: TB-20 IO-540-C4D5D S.O.C.A.T.A.: Trinidad TB-20 IO-540-D4A5 Piper Aircraft: Comanche (PA-24 “260”)   Siai-Marchetti: (SF-260) IO-540-D4B5 Cerva: (CE-43 Guepard) IO-540-J4A5 Piper Aircraft: Aztec (PA-23 “250”) IO-540-R1A5 Piper Aircraft: Comanche (PA-24) IO-540-T4A5D General Aviation: Model 114 IO-540-T4B5 Commander: 114B IO-540-T4B5D Rockwell: 114 IO-540-T4C5D Lake Aircraft: Seawolf IO-540-V4A5 Maule: MT-7-260, M-7-260   Aircraft Manufacturing Factory IO-540-V4A5D Brooklands: Scoutmaster IO-540-W1A5 Maule: MX-7-235, MT-7-235, M7-235 IO-540-W1A5D Maule: Star Rocket (MX-7-235), Super Rocket (M-6-235), Super Std. Rocket (M-7-235) IO-540-W3A5D Schweizer: Power Glider AEIO-540-D4A5 Christen: Pitts (S-2S), S-2B)   Siai-Marchetti: SF-260   H.A.L.: HPT-32   Slingsby: Firefly T3A AEIO-540-D4B5 Moravan: Zlin-50L   H.A.L.: HPT-32 AEIO-540-D4D5 Burkhart Grob: Grob G, 115T Aero TIO-540-C1A Piper Aircraft: Turbo Aztec (PA-23-250) TIO-540-K1AD Piper Aircraft TIO-540-AA1AD Aerofab Inc.: Turbo Renegade (270) TIO-540-AB1AD S.O.C.A.T.A.: Trinidad TC TB-21 TIO-540-AB1BD Schweizer TIO-540-AF1A Mooney Aircraft: “TLS” M20M TIO-540-AF1B Mooney Aircraft: “TLS” M20M TIO-540-AG1A Commander Aircraft: 114TC TIO-540-AK1A Cessna Aircraft: Turbo Skylane T182T LTIO-540-K1AD Piper Aircraft

You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Engines Not Repaired or Overhauled Since New (f) If your engine has not been overhauled or had any major repair since new, no further action is required. Engines Overhauled or Repaired Since New (g) If your engine was overhauled or repaired since new, do the following: (1) Determine if ECi cylinder assemblies, P/N AEL65102 series “Classic Cast”, with casting P/N AEL65099 and SNs 1 through 9879 are installed on your engine, as follows: (i) Inspect the engine log books and maintenance records for reference to the subject ECi cylinder assemblies. (ii) 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. (2) If the cylinder assemblies are not ECi, P/N AEL65102 series “Classic Cast”, with casting P/N AEL65099, no further action is required. (3) If any cylinder assembly is an ECi P/N AEL65102 series “Classic Cast”, with casting P/N AEL65099 and a SN 1 through 9879, do the following: (i) If the cylinder assembly has fewer than 800 operating hours-in-service (HIS) on the effective date of this AD, replace the cylinder assembly at no later than 800 operating HIS. No action is required until the operating HIS reaches 800 hours. (ii) If the cylinder assembly has 800 operating HIS or more on the effective date of this AD, replace the cylinder assembly within 60 operating HIS after the effective date of this AD. Definition of a Replacement Cylinder Assembly (h) For the purpose of this AD, a replacement cylinder assembly is defined as follows: (1) A serviceable cylinder assembly made by Lycoming Engines. (2) A serviceable FAA-approved, Parts Manufacturer Approval cylinder assembly from another manufacturer. (3) A serviceable ECi cylinder assembly, P/N AEL65102 series, “Titan”, with casting P/N AEL85009. (4) A serviceable ECi cylinder assembly, P/N AEL65102 series, with casting P/N AEL65099, that has a SN 9880 or higher. Prohibition of Cylinder Assemblies, P/N AEL65102 Series “Classic Cast”, With Casting P/N AEL65099 and SNs 1 Through 9879 (i) After the effective date of this AD, do not install any ECi cylinder assembly, P/N AEL65102, with casting P/N AEL65099 that has a SN 1 through 9879, onto any engine. Alternative Methods of

This AD results from reports of about 30 failures of the subject cylinder assemblies marketed by ECi. We are issuing this AD to prevent loss of engine power due to cracks in the cylinder assemblies and possible engine failure caused by separation of a cylinder head.