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Service Bulletins

In the event that Lycoming issues a Service Bulletin, compliance is required within the compliance time stated for the affected models listed on the bulletin. Service Bulletins, readily identified by the "Mandatory" heading printed in red, provide instructions or procedures that must be observed for safety reasons.

Service Bulletins are available from Lycoming Distributors. Complete sets of Service Bulletins, Instructions and Letters are available for purchase in both hard copy and electronic form either directly from Lycoming or through a Lycoming Distributor.

SB-602
Incorrect Part Numbers on Service Instruction No. 1098G

SB-601
Non-Compliant Oil Fill Tubes P/N 77527

SB-599
Compliance with Hartzell Engine Technologies, LLC (Previously Kelly Aerospace) Service Bulletin No. 045, 201F Fuel Pump Inspection and Recall

SB-598A
V-Band Clamp

SB-597
Fuel Drain Valve Adapter Assembly P/N LW-13807

SB-596
Reprint of AVStar Mandatory Service Bulletin AFSSB6 Revision 2

SB-595
Torque Values for Screws that Attach Ignition Harness Attachment Plate (for S-20 and S-200 Series Teledyne Continental Motors (TCM) Magnetos)

SB-594
Reprint of Hartzell Engine Technologies LLC (HET) (formerly Kelly Aerospace) Mandatory Service Bulletin 040 A.

SB-593
Intake Valve Inspection

SB-592
Engine Inspection after Overboost

SB-591A
Kelly Aerospace Bulletin

SB-590A
Use of Aircraft Boost Pump with Kelly Aerospace 200F Series (Lycoming P/N 62E23185, 62E23186, 62E23187, 62E23188, 62E23189) Fuel Pumps

SB-585
Incorrect Exhaust Valve Rotator Cap Shipped with Cylinder Kits P/N 05K21119, 05K21121, and 05K21122

SB-584B
Reprint of MANDATORY Unison Service Bulletin No. SB3-08

SB-583A
Reprint of MANDATORY Unison Service Bulletin No. SB2-08

SB-582A-S1
Supplement No. 1 to Reprint of Precision Airmotive MANDATORY Service Bulletin No. MSA-13

SB-582A
Reprint of Precision Airmotive MANDATORY Service Bulletin No. MSA13

SB-581A
Reprint of Precision Airmotive MANDATORY Service Bulletin Nos. PRS-107, Rev. 4 and PEX-1, Rex. 1

SB-580
Reprint of Kelly Aerospace Service Bulletin No. 029

SB-579
Clearance Between Oil Sump Assembly and Oil Sump Baffle

SB-578
Incorrect Cylinder Assemblies Shipped With Cylinder Kits

SB-577A
Reprint of SkyTec Service Bulletin No. 0701, Rev. D (SkyTec PM Model Starter Replacement)

SB-576
Reprint of Teledyne Continental Ignition Systems Service Bulletin No. SB 633A

SB-574A
Cylinder Stud Hole Cross-Threaded

SB-573
Pressurized Magneto Pressure Tests

SB-573S-1
Supplement to Pressurized Magneto Pressure Tests

SB-572
Missing Oil Passage Hole at Idler Shaft Location

SB-571
Reprint of Sky-Tec Service Bulletin No. 2006-3-1 (Replacement of Specified Sky-Tec Starters - Model 31B22101/149-24PM)

SB-569A-1
Supplement to Crankshaft Retirement for Certain Lycoming Engines

SB-569A
Crankshaft Retirement for Certain Lycoming Engines

SB-568
Reprint of Slick Aircraft Products Service Bulletin No. SB1-88B

SB-566S-1
Additional 360 Engines with Suspect Crankshafts

SB-566
Crankshaft Replacement in Lycoming Engines

SB-565
Diaphragm-Type Fuel Pump Inspection/Replacement

SB-564A
Inspection of Suction Screen Length

SB-561
Connecting Rod Bearing Replacement on (L)TIO-540-U2A, -V2AD, and -W2A Engines

SB-559
Reprint of Kelly Aerospace Power Systems (Formerly Electrosystems) S.B. No A-112, Rev. A

SB-558
Inspection of Oil Suction Screen Airea in IO-540-AE1A5 Oil Sump for Casting Voids

SB-557
Fuel Injector, Precision Airmotive Corp. Service Bulletin No. PRS-105, "Servo Metered Fuel Pressure Port Leakage"

SB-556
P/N LW-11201 Washer, Replacement

SB-555A
Inspection, Oil Pump Body Plug

SB-554S-5
Supplement No. 5 to S.B. 554

SB-554S-4
Supplement No. 4 to S.B. 554

SB-554S-3
Supplement No. 3 to S.B. 554

SB-554
Bolt, Crankshaft Gear Retaining, Replacement

SB-553S-1
Supplement No. 1 to Service Bulletin No. 553

SB-553
Crankshaft Inspection for Lycoming Six Cylinder Turbocharged Engines (Refer to Supplement No. 1 to S.B. 553)

SB-552S-1
Supplement No. 1 to Service Bulletin No. 552

SB-552
Crankshaft Replacement in Lycoming TIO and LTIO-540 Engines Rated at 300 Horsepower and Higher (Refer to Supplement No. 1 to S.B. 552)

SB-549S-1
Supplement No. 1 to Service Bulletin No. 549

SB-549
Crankshaft/Engine Inspection (Refer to Supplement No. 1 to S.B. 549)

SB-548A
Diaphragm-Type Fuel Pump Inspection/Replacement

SB-547S-1
Supplement No. 1 to Service Bulletin No. 547

SB-547
Bearing Replacement, Connecting Rod on TIO-540-AE2A Model Engines (Refer to Supplement No. 1 to S.B. 547)

SB-545A
Filler Tube, Oil, Replacement

SB-544B
Bearing Replacement, Part Identification

SB-543C
Converter Plate Gasket, Oil Filter, Replacement

SB-539A
Fuel Pump, Lear Romec Service Bulletins No. RG9080-73-001, No. RG9570-73-001, and No. RG17980-73-001, "Replacement of Valve Housing and Related Seals"

SB-533A
Engine Stoppage, Recommendations Regarding Accidental

SB-530B
Coating, Protective, Application on Crankshaft

SB-529B-1
Fuel Pump, Lear Romec Service Bulletin No. 101SB020, "Torquing of Relief Valve Cover Screws"

SB-524S-1
Supplement No. 1 to Service Bulletin No. 524

SB-524
Aluminum and Sintered Iron Oil Pump Impellers, Replacement (Refer to Supplement No. 1 to S.B. 524)

SB-505B
Crankshaft ID, Inspection for Corrosion

SB-480E
I. Oil and Filter Change and Screen Cleaning II. Oil Filter/Screen Content Inspection

SB-475C
Crankshaft Gear Modification and Assembly Procedures

SB-471B
Lycoming Engines Oil Additive P/N LW-16702

SB-446E
The Use of Lycoming LW16702 Oil Additive

SB-411C
Adapter Kit for Magneto Isolation Drive

SB-399A
Safe Qty of Lubricating Oil

SB-398B
Recommendation Regarding Use of Incorrect Fuel

SB-388C
Exhaust Valve and Guide, Procedure to Determine Condition (Refer to to S.B. 388)

SB-369L
Engine Inspection After Overspeed

SB-366B
Carburetor Throttle Body Screw Inspection

SB-342F
Fuel Line and Support Clamp Inspection and Installation

SB-240W
Mandatory Parts Replacement at Overhaul and During Repair or Maintenance

 

 

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