Service Instruction No. 1514 D SUBJECT Roller Tappets Part Information Update DATE February 05, 2018 MODELS AFFECTED Lycoming new, rebuilt and overhauled 4 and 6 cylinder aircraft engines with the new roller tappet configuration TIME OF COMPLIANCE Whenever the new roller tappet engines are serviced

DATE: February 27, 2018 Reason for Supplement This supplement retains all revisions applied in Supplement 4 (described below) and adds the IO-360-B1G6 to the list of engine models for Diagram No. 4 as an optional configuration. Supplement 4 to Service Bulletin No. 342G revised the Optional configuration for engine model IO-360-B4A included in Diagram No. 4 (Item 2 of Supplement 3, dated November 2...

Warranty Repair of AVStar Fuel Systems, Inc. Fuel Control Products Date: April 16, 2018 TO: All Owners and Operators of Lycoming Piston Aircraft Engines SUBJECT: Warranty Repair of AVStar Fuel Systems, Inc. Fuel Control Products REASON FOR REVISION: Update AVStar warranty information sheet, and contact information.

DATE RELEASED: October 2017 TITLE: HIO-390-A1A Maintenance Manual DOCUMENT PART NUMBER: MM-HIO-390-A1A

DATE RELEASED: May 2018 TITLE: HIO-390-A1A Illustrated Parts Catalog DOCUMENT PART NUMBER: PC-HIO-390-A1A

DATE RELEASED: October 2017 TITLE: HIO-390-A1A Installation & Operations Manual DOCUMENT PART NUMBER: IOM-HIO-A1A

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...

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

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