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Service Bulletin No. 627 E

EXHAUST SYSTEM INSPECTION DATE: May 17, 2018 SUBJECT: Exhaust System Inspection MODELS AFFECTED: Lycoming Engine Model TIO-540-AJ1A TIME OF COMPLIANCE: If the Exhaust System is not replaced per this revision, after the initial Exhaust System Inspection, continue with subsequent repetitive Exhaust System Inspections per Table 2 in this Service Bulletin REASON FOR REVISION: Refined language on Page...
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Service Letter No. 275 A

Warranty Procedure for Exhaust System Replacement Referenced in the most current revision of SB 627 DATE: May 17, 2018 TO: All Owners and Operators of Lycoming Engines Model TIO-540-AJ1A SUBJECT: Warranty Procedure for Exhaust System Replacement Referenced in the most current revision of SB627 REASON FOR REVISION: Updated language to refer to the most current revision of SB627
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Service Instruction No. 1572

Plug Replacement of Vapor Return Fitting on Piper installation of IO-360- B4A DATE: August 3, 2018 SUBJECT: Plug Replacement of Vapor Return Fitting on Piper installation of IO-360- B4A MODELS AFFECTED: IO-360-B4A

LW-16518

Submitted by root on
CARBURETOR-HA-6 (10-5253)
Revision
-L
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Service Instruction No. 1570 A

Alternate Oil Sump Fitting Configuration for Aerobatic Inverted Oil System DATE: August 3, 2018 SUBJECT: Alternate Oil Sump Fitting Configuration for Aerobatic Inverted Oil System MODELS AFFECTED: IO-540-K1K5 Engines Installed in ENAER T-35 Pillan Aircraft TIME OF COMPLIANCE: As required by the aircraft manufacturer, based on parts availability* REASON FOR REVISION: Added additional section...
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Service Bulletin No. 301 B

MAINTENANCE PROCEDURES AND SERVICE LIMITATIONS FOR VALVES DATE: February 18, 1977 MODELS AFFECTED: All Avco Lycoming opposed series aircraft engines. TIME OF COMPLIANCE: During periodic maintenance and when intake and exhaust valves are removed from cylinders.
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Service Letter No. 247 J

SHELF LIFE REQUIREMENTS DATE: August 23, 2018 TO: All Owners and Operators of Lycoming Engines Aircraft Engines SUBJECT: Shelf Life Requirements REASON FOR REVISION: Added part numbers 37B19774-472, LW-12008, and STD-1934 to Table 1; Removed part number 951392 from Table 2; added part number AV951392 to Table 2