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Lycoming Engines service bulletins

  1. SBLycoming SB 671Fuel Pump Leak Inspection and Diaphragm Replacement, Hartzell Engine Tech (HET) Alert Service Bulletin No.2332026-08-24CurrentManufacturer - not an FAA rule
  2. SBLycoming SB 670E-MAG Spark Plug Adapter Inspection, Hartzell Engine Tech (HET) Alert Service Bulletin No.2322026-08-05CurrentManufacturer - not an FAA rule
  3. SBLycoming SI 1485Exhaust Valve and Guide Identification Procedure2026-07-30CurrentManufacturer - not an FAA rule
  4. SBLycoming SI 1596Recommended Time Between Overhaul Periods for Engines Affected by and Not in Compliance with AD 2012-19-012026-07-20CurrentManufacturer - not an FAA rule
  5. SBLycoming SI 1009BFTime Between Overhaul (TBO) Schedules2026-07-20CurrentManufacturer - not an FAA rule
  6. SBLycoming SB 669Hartzell Engine Tech (HET) Exhaust Bypass Valve Assembly2026-06-30CurrentManufacturer - not an FAA rule
  7. SBLycoming SL L234Tool Rental Program2026-06-25CurrentManufacturer - not an FAA rule
  8. SBLycoming SL 385Rental Service Tools for Lycoming Piston Engines2026-06-25CurrentManufacturer - not an FAA rule
  9. SBLycoming SI 385Rental Service Tools for Lycoming Piston Engines2026-06-25CurrentManufacturer - not an FAA rule
  10. SBLycoming SB 385Rental Service Tools for Lycoming Piston Engines2026-06-25CurrentManufacturer - not an FAA rule
  11. SBLycoming SI 1154FAA-Approved Starters and Alternators2026-05-18CurrentManufacturer - not an FAA rule
  12. SBLycoming SB 640Starter Wire Contact with Fuel Servo2026-05-14CurrentManufacturer - not an FAA rule
  13. SBLycoming SI 1575New Connecting Rod Bushing2026-02-10CurrentManufacturer - not an FAA rule
  14. SBLycoming SI 1366Repair Procedure for Worn Rocker Shaft Bushing Hole2026-02-10CurrentManufacturer - not an FAA rule
  15. SBLycoming SI 1014Lubricating Oil Recommendations2026-02-10CurrentManufacturer - not an FAA rule
  16. SBLycoming SB 665Heat Shield Removal2026-02-10CurrentManufacturer - not an FAA rule
  17. SBLycoming SB 533Recommended Action for Sudden Engine Stoppage, Propeller/Rotor Strike or Loss of Propeller/Rotor Blade or Tip2026-02-10CurrentManufacturer - not an FAA rule
  18. SBLycoming SI 1042APPROVED SPARK PLUGS2026-01-28CurrentManufacturer - not an FAA rule
  19. SBLycoming SL LReciprocating Engine and Accessory Maintenance Publications2026-01-15CurrentManufacturer - not an FAA rule
  20. SBLycoming SL L299Retirement of Two Configurations of IO-390-C3B6 Engines2026-01-06CurrentManufacturer - not an FAA rule
  21. SBLycoming SL 525SSP-525 Valve Sticking - Early Warning Signs and Indications2025-11-24CurrentManufacturer - not an FAA rule
  22. SBLycoming SI 525SSP-525 Valve Sticking - Early Warning Signs and Indications2025-11-24CurrentManufacturer - not an FAA rule
  23. SBLycoming SI 1481Factory Engine Preservation2025-11-24CurrentManufacturer - not an FAA rule
  24. SBLycoming SI 1368Tachometer Adapter Seal Washer and Retainer2025-11-24CurrentManufacturer - not an FAA rule
  25. SBLycoming SB 525SSP-525 Valve Sticking - Early Warning Signs and Indications2025-11-24CurrentManufacturer - not an FAA rule
  26. SBLycoming SL 298iE2 Engine Driven Fuel Pump Leak2025-11-18CurrentManufacturer - not an FAA rule
  27. SBLycoming SI 1443Approved Slick Magnetos, Hartzell PowerUp Magnetos, and Lycoming Electronic Ignition System (EIS) on Lycoming Engines2025-11-18CurrentManufacturer - not an FAA rule
  28. SBLycoming SB 664Piston Pin Replacement2025-11-05CurrentManufacturer - not an FAA rule
  29. SBLycoming SL L291Substitution of Turbocharger2025-09-24CurrentManufacturer - not an FAA rule
  30. SBLycoming SI 1129Methods of Checking DC Alternator and Generator Belt Tension2025-09-24CurrentManufacturer - not an FAA rule
  31. SBLycoming SI 1080Required Maintenance Items for Specific Components2025-09-24CurrentManufacturer - not an FAA rule
  32. SBLycoming SI 1304Engine Data Plate (Identification Plate) Replacement2025-08-26CurrentManufacturer - not an FAA rule
  33. SBLycoming SL 112-15SSP-112-152025-07-29CurrentManufacturer - not an FAA rule
  34. SBLycoming SL 110-3SSP-110-32025-07-29CurrentManufacturer - not an FAA rule
  35. SBLycoming SI 112-15SSP-112-152025-07-29CurrentManufacturer - not an FAA rule
  36. SBLycoming SI 110-3SSP-110-32025-07-29CurrentManufacturer - not an FAA rule
  37. SBLycoming SI 1037AAApproved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines2025-07-29CurrentManufacturer - not an FAA rule
  38. SBLycoming SB 342Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation2025-07-29CurrentManufacturer - not an FAA rule
  39. SBLycoming SB 112-15SSP-112-152025-07-29CurrentManufacturer - not an FAA rule
  40. SBLycoming SB 110-3SSP-110-32025-07-29CurrentManufacturer - not an FAA rule
  41. SBLycoming SI 1594O-235 Crankcase Inspection2025-07-15CurrentManufacturer - not an FAA rule
  42. SBLycoming SB 663Non-Conforming Counterweight Bushings2025-07-15CurrentManufacturer - not an FAA rule
  43. SBLycoming SB 240AAMandatory Parts Replacement at Overhaul and During Repair or Maintenance2025-07-08CurrentManufacturer - not an FAA rule
  44. SBLycoming SI 1290FRepair of Oil Leakage at Crankcase Thru-Stud Locations; Assembled and Unassembled Engines.2025-06-17CurrentManufacturer - not an FAA rule
  45. SBLycoming SL 296Electronic Ignition System (EIS) Kits discontinued2025-06-16CurrentManufacturer - not an FAA rule
  46. SBLycoming SB 630BConnecting Rod Bushing Inspection After Cylinder Removal2025-06-12CurrentManufacturer - not an FAA rule
  47. SBLycoming SI 1593Incorrectly marked alternator belts2025-05-13CurrentManufacturer - not an FAA rule
  48. SBLycoming SB 656AReplacement of 6-Cylinder Electronic Ignition System (EIS)2025-04-02CurrentManufacturer - not an FAA rule
  49. SBLycoming SB 661STD-35 Plain Washer Replacement2025-02-21CurrentManufacturer - not an FAA rule
  50. SBLycoming SB 659STD-33 Plain Washer Replacement2025-02-21CurrentManufacturer - not an FAA rule
  51. SBLycoming SB 648Wastegate Solenoid Valve Inspection and Cleaning2025-02-21CurrentManufacturer - not an FAA rule
  52. SBLycoming SB 658Starter Inspection, Hartzell Engine Tech (HET) Service Bulletin (SB) No.2112025-01-09CurrentManufacturer - not an FAA rule
  53. SBLycoming SI 1592Set up and Adjustment of Fuel Control. Installation of the Throttle Position Sensor (TPS) and Mixture Position Sensor (MPS)2024-10-03CurrentManufacturer - not an FAA rule
  54. SBLycoming SB 660Reprint of Slick/Champion Aerospace Service Bulletin SB1-24A2024-09-20CurrentManufacturer - not an FAA rule
  55. SBLycoming SI 1588Rocker Box Cover Screws Torque Values and Torque Sequence2024-02-14CurrentManufacturer - not an FAA rule
  56. SBLycoming SB 655Hartzell Engine Tech (HET) Service Bulletin (SB) No. 2032024-01-04CurrentManufacturer - not an FAA rule
  57. SBLycoming SI 1532Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies for Lycoming Engines2023-12-13CurrentManufacturer - not an FAA rule
  58. SBLycoming SI 1589Exhaust Bypass Valve Assembly Replacement2023-12-01CurrentManufacturer - not an FAA rule
  59. SBLycoming SI 1585Oil Cooler Bypass Valve Assembly Replacement2023-12-01CurrentManufacturer - not an FAA rule
  60. SBLycoming SB 653Hartzell Engine Tech (HET) Alert Service Bulletin (ASB) No. 0982023-09-13CurrentManufacturer - not an FAA rule
  61. SBLycoming SI 1577INTAKE VALVE IN-SERVICE DATA2023-02-10CurrentManufacturer - not an FAA rule
  62. SBLycoming SI 1324CRANKSHAFT OIL SEALS2023-02-10CurrentManufacturer - not an FAA rule
  63. SBLycoming SB 651INSPECTION FOR ROTATOR CAPS ON INTAKE VALVES2023-02-10CurrentManufacturer - not an FAA rule
  64. SBLycoming SB 649INSTALLATION OF CORRECT ELECTRONIC IGNITION SYSTEM (EIS)2023-02-10CurrentManufacturer - not an FAA rule
  65. SBLycoming SB 628REPRINT OF HARTZELL ENGINE TECHNOLOGIES’ (HET) ALERT SERVICE BULLETIN (ASB) 0762023-02-10CurrentManufacturer - not an FAA rule
  66. SBLycoming SI 1583Front Expansion Plug Replacement2022-05-20CurrentManufacturer - not an FAA rule
  67. SBLycoming SI 1533Approved Rotary Vane Fuel Pumps2022-04-08CurrentManufacturer - not an FAA rule
  68. SBLycoming SI 1587Reprint of AVStar Service Information Letter No. AFS-SIL-032022-02-03CurrentManufacturer - not an FAA rule
  69. SBLycoming SI 1586Oil Filter Base Bypass Spring Replacement2021-12-21CurrentManufacturer - not an FAA rule
  70. SBLycoming SB 647Incorrect Markings on Service Tool# ST-3102021-12-15CurrentManufacturer - not an FAA rule
  71. SBLycoming SI 1582Fuel Injector Replacement2021-11-22CurrentManufacturer - not an FAA rule
  72. SBLycoming SI 1573Lycoming TEO-540 Engine Series Approved Engine Configurations2021-11-22CurrentManufacturer - not an FAA rule
  73. SBLycoming SB 645Small End Connecting Rod Bushing Inspection2021-09-24CurrentManufacturer - not an FAA rule
  74. SBLycoming SB 643Crankcase Nut Safety Wire Inspection2021-09-16CurrentManufacturer - not an FAA rule
  75. SBLycoming SI 1280Rotator Type Intake Valves2021-07-21CurrentManufacturer - not an FAA rule
  76. SBLycoming SB 642Incorrect Piston and Ring Combination2021-06-17CurrentManufacturer - not an FAA rule
  77. SBLycoming SI 1569Installation, Operation, and Maintenance of Lycoming Electronic Ignition System (EIS)2021-04-21CurrentManufacturer - not an FAA rule
  78. SBLycoming SI 1579Exhaust System Replacement Components2020-11-19CurrentManufacturer - not an FAA rule
  79. SBLycoming SI 1316Repair of Oil Cooler By-Pass Valve Seat2020-08-06CurrentManufacturer - not an FAA rule
  80. SBLycoming SI 1060PUSH ROD IDENTIFICATION2020-04-21CurrentManufacturer - not an FAA rule
  81. SBLycoming SI 1098PROPELLER FLANGE BUSHING LOCATION2020-04-08CurrentManufacturer - not an FAA rule
  82. SBLycoming SI 1012COUNTERWEIGHTS AND ROLLERS ON ENGINE MODELS2020-04-08CurrentManufacturer - not an FAA rule
  83. SBLycoming SB 369ENGINE INSPECTION AFTER OVERSPEED2020-04-08CurrentManufacturer - not an FAA rule
  84. SBLycoming SI 1070SPECIFIED FUELS FOR SPARK-IGNITED GASOLINE AIRCRAFT ENGINE MODELS2020-04-07CurrentManufacturer - not an FAA rule
  85. SBLycoming SB 639Inspection of Rocker Arm, Part Number LW-150142020-01-17CurrentManufacturer - not an FAA rule
  86. SBLycoming SL 277Hartzell Engine Technologies and Lycoming Engines Alternator Distribution Agreement2019-12-17CurrentManufacturer - not an FAA rule
  87. SBLycoming SL 278Lycoming Engines' Product Support Hours2019-07-13CurrentManufacturer - not an FAA rule
  88. SBLycoming SI 1279Oil Sump Baffle Replacement2019-05-15CurrentManufacturer - not an FAA rule
  89. SBLycoming SI 1415New Turbocharger Mounting Hardware2019-03-22CurrentManufacturer - not an FAA rule
  90. SBLycoming SB 637Reprint of Slick/Champion Aerospace Service Bulletin SB1-192019-03-14CurrentManufacturer - not an FAA rule
  91. SBLycoming SB 622Reprint of Slick/Champion Aerospace Service Bulletin SB1-152019-03-14CurrentManufacturer - not an FAA rule
  92. SBLycoming SI 1498Recommended Engine Procedures for Purge of Vapor During Ground Operations2019-01-08CurrentManufacturer - not an FAA rule
  93. SBLycoming SI 1011Tappets and Lifters2019-01-08CurrentManufacturer - not an FAA rule
  94. SBLycoming SB 634Cylinder and Head Assembly Serviceable Life2018-10-10CurrentManufacturer - not an FAA rule
  95. SBLycoming SL 247Shelf Life Requirements2018-08-24CurrentManufacturer - not an FAA rule
  96. SBLycoming SI 1571Lockplate installation for Induction Housing on TIO-540-AJ1A and IO-540-AC1A52018-08-24CurrentManufacturer - not an FAA rule
  97. SBLycoming SB 301Maintenance Procedures and Service Limitations for Valves2018-08-24CurrentManufacturer - not an FAA rule
  98. SBLycoming SI 1572Plug Replacement of Vapor Return Fitting on Piper installation of IO-360- B4A2018-08-02CurrentManufacturer - not an FAA rule
  99. SBLycoming SI 1570Alternate Oil Sump Fitting Configuration for Aerobatic Inverted Oil System2018-08-02CurrentManufacturer - not an FAA rule
  100. SBLycoming SL 275Warranty Procedure for Exhaust System Replacement Referenced in the most current revision of SB6272018-05-16CurrentManufacturer - not an FAA rule

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