AD 2009-26-12 Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

If your engine has not been overhauled, or not had any cylinder assemblies replaced since new, no further action is required. (d) This AD applies to the Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, “Parallel Valve,” reciprocating engines listed in Table 1 of this AD, with ECi cylinder assembly, part number (P/N) AEL65102 series “Titan,” and with cylinder head, P/N AEL85099, installed. (1) The applicable cylinder assembly serial numbers (S/Ns) are S/N 1138-02 through S/N 35171-22 (referred to in this AD as Group “A” cylinder assemblies); and (2) S/N 35239-01 through S/N 42179-30 (referred to in this AD as Group “B” cylinder assemblies). (3) The cylinder assembly P/N is at the crankcase end of the cylinder assembly, and might be difficult to see. As a guide in determining if your cylinder assemblies are affected, all affected cylinder assemblies have cylinder head P/N AEL85099. The cylinder head P/N is at the top of the cylinder head, near the intake and exhaust valve springs, and is easier to locate than the cylinder assembly P/N. (4) The set of numbers appearing on the cylinder, above and to the left of the S/N, in the form of “123456” is not used for determining this AD's applicability. Table 1—Engine Models Cylinder assembly part No. Installed on engine models AEL65102-NST04 O-320-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.   IO-320-A1A, A2A, B1A, B1B, B1C, B1D, B1E, B2A, D1A, D1AD, D1B, D1C, E1A, E1B, E2A, E2B.   AEIO-320-D1B, D2B, E1A, E1B, E2A, E2B.   AIO-320-A1A, A1B, A2A, A2B, B1B, C1B.   LIO-320-B1A. AEL65102-NST05 IO-320-C1A, C1B, C1F, F1A.   LIO-320-C1A. AEL65102-NST06 O-320-A1A, A2A, A2B, A2C, A3A, A3B, A3C, E1A, E1B, E2A, E2C, (also, an O-320 model with no suffix).   IO-320-A1A, A2A. AEL65102-NST07 IO-320-B1A, B1B.   LIO-320- B1A. AEL65102-NST08 O-320-B1A, B1B, B2A, B2B, B3A, B3B, B3C, C1A, C1B, C2A, C2B, C3A, C3B, C3C, D1A, D1B, D2A, D2B, D2C. AEL65102-NST10 O-360-A1A, A1C, A1D, A2A, A2E, A3A, A3D, A4A, B1A, B1B, B2A, B2B, C1A, C1C, C1G, C2A, C2B, C2C, C2D, D1A, D2A, D2B.   IO-360-B1A, B1B, B1C.   HO-360-A1A, B1A, B1B.   HIO-360-B1A, B1B.   AEIO-360-B1B.   O-540-A1A, A1A5, A1B5, A1C5, A1D, A1D5, A2B, A3D5, A4A5, A4B5, A4C5, A4D5, B1A5, B1B5, B1D5, B2A5, B2B5, B2C5, B4A5, B4B5, D1A5, E1A, E4A5, E4B5, E4C5, F1A5, F1B5, G1A5, G2A5.   IO-540-C1B5, C1C5, C2C, C4B5, C4B5D, C4C5, D4A5, D4B5, N1A5. AEL65102-NST12 O-360-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.   HO-360 -C1A.   LO-360-A1G6D, A1H6.   HIO-360-B1A, B1B, G1A.   LTO-360-A1A6D.   TO-360-A1A6D.   IO-360-B1B, B1BD, B1D, B1E, B1F, B1F6, B1G6, B2E, B2F, B2F6, B4A, E1A, L2A, M1A, M1B.   AEIO-360-B1B, B1D, B1E, B1F, B1F6, B1G6, B1H, B2F, B2F6, B4A, H1A, H1B.   O-540-A4D5, B2B5, B2C5, B2C5D, B4B5, B4B5D, E4A5, E4B5, E4C5, G1A5, G2A5, H1A5, H1A5D, H1B5, H1B5D, H2A5, H2A5D, H2B5D.   IO-540-C4B5, C4B5D, C4D5, C4D5D, D4A5, D4B5, D4C5, N1A5, N1A5D, T4A5D, T4B5, T4B5D, T4C5D, V4A5, V4A5D.   AEIO-540-D4A5, D4B5, D4C5, D4D5. AEL65102-NST26 IO-540-J4A5, R1A5.   TIO-540-C1A, E1A, G1A, H1A. AEL65102-NST38 IO-360-F1A.   TIO-540-AA1AD, AB1AD, AB1BD, AF1A, AG1A, AK1A, C1A, C1AD, K1AD.   LTIO-540-K1AD. AEL65102-NST43 O-360-J2A.   O-540-F1B5, J1A5D, J1B5D, J1C5D, J1D5D, J2A5D, J2B5D, J2C5D, J2D5D, J3A5, J3A5D, J3C5D.   IO-540-AB1A5, W1A5, W1A5D, W3A5D. AEL65102-NST44 O-540-L3C5D. The Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, “Parallel Valve”, reciprocating 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 Engine models 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. 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-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. 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. 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 “180”).   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: Comanche (PA-24 “250”).   Doyn Aircraft: Doyn-Piper (PA-24 “250”). O-540-B1D5 Wassmer: (WA-421). O-540-B2B5 Piper Aircraft: Pawnee (PA-25 “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-25 “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-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 Overhauled or Cylinder Assemblies Replaced Since New (g) If your engine was overhauled or had a cylinder assembly replaced since new, do the following: (1) Before further flight, inspect the maintenance records and engine logbook to determine if the overhaul or repair facility installed ECi cylinder assemblies, P/N AEL65102, with cylinder head, PN AEL85099, S/N 1138-02 through S/N 35171-22, or S/N 35239-01 through S/N 42179-30, in your engine. (2) If your cylinder assemblies are not ECi, P/N AEL65102, no further action is required. (3) If your cylinder assemblies are ECi, P/N AEL65102, but the S/N is not listed in this AD, no further action is required. (4) If the cylinder assemblies are ECi, P/N AEL65102, and if the S/N is listed in this AD, do the following: Group “A” Cylinder Assemblies; S/N 1138-02 Through S/N 35171-22 (i) For Group “A” cylinder assemblies: (A) Perform an initial visual inspection as specified in paragraphs (h) through (i) of this AD, and an initial compression test as specified in paragraphs (j) through (m) of this AD, within the next 10 operating hours time-in-service (TIS), if the cylinder assembly has 350 or more operating hours TIS on the effective date of this AD, but fewer than 2,000 operating hours TIS. (B) Perform an initial visual inspection as specified in paragraphs (h) through (i) of this AD, and an initial compression test as specified in paragraphs (j) through (m) of this AD, within the next 10 operating hours TIS, or before exceeding 350 operating hours TIS, whichever occurs later, if the cylinder assembly has fewer than 350 operating hours TIS on the effective date of this AD. (C) Replace cylinder assemblies installed in helicopter engines within the next 25 operating hours TIS after the effective date of this AD if the cylinder assembly has 1,500 operating hours TIS or more on the effective date of this AD. (D) Replace cylinder assemblies installed in airplane engines within the next 25 operating hours TIS after the effective date of this AD if the cylinder assembly has 2,000 operating hours TIS or more on the effective date of this AD. (E) Perform repetitive visual inspections as specified in paragraphs (h) through (i) of this AD, and repetitive compression tests as specified in paragraphs (j) through (m) of this AD, within every 50 operating hours TIS. (F) Replace cylinder assemblies installed in helicopter engines that pass the visual inspections and compression tests, no later than 1,500 operating hours TIS after the effective date of this AD. (G) Replace cylinder assemblies installed in airplane engines that pass the visual inspections and compression tests, no later than 2,000 operating hours TIS after the effective date of this AD. Group “B” Cylinder Assemblies; S/N 35239-01 through S/N 42179-30 (ii) For Group “B” cylinder assemblies: (A) Perform an initial visual inspection as specified in paragraphs (h) through (i) of this AD, and initial compression test as specified in paragraphs (j) through (l) of this AD, within the next 10 operating hours TIS. (B) Replace the cylinder assembly within the next 25 operating hours TIS after the effective date of this AD if the cylinder assembly has 350 or more operating hours TIS on the effective date of this AD. (C) Replace cylinder assemblies that pass the initial visual inspections and compression tests, before exceeding 350 operating hours TIS after the effective date of this AD. Visual Inspection (h) Visually inspect each cylinder head around the exhaust valve side for cracks or any signs of black or white residue of combustion leakage from cracks. (i) Replace cracked cylinder assemblies before further flight. Cylinder Assembly Compression Test (j) Perform a standard cylinder differential compression test. (k) During the compression test, if the cylinder pressure gauge reads below 70 pounds-per-square-inch, apply a water and soap solution to the side of the leaking cylinder, near the head-to-barrel interface. (l) Replace the cylinder assembly before further flight if air leakage and bubbles are observed on the side of the cylinder assembly, near the head-to-barrel interface. (m) For Group “A” cylinder assemblies only, repair or replace the engine cylinder assembly before further flight if the cause of the low gauge reading in paragraph (k) of this AD is from leaking intake or exhaust valves, or from leaking piston rings. Prohibition of Group “B” ECi Cylinder Assemblies Affected by This AD (n) After the effective date of this AD, do not install any Group “B” ECi cylinder assembly, P/N AEL65102, onto any engine and do not attempt to repair or reuse Group “B” cylinder assemblies. Alternative Methods of

This AD results from reports of 10 additional cylinder head separations since issuing AD 2008-19-05, on cylinder S/Ns not listed in that AD. We are issuing this AD to prevent loss of engine power due to cracks at the head-to-barrel interface in the cylinder assemblies and possible engine failure caused by separation of a cylinder head, which could result in loss of control of the aircraft.