May 25, 2017 MODELS AFFECTED: All Lycoming engine models including electronically-controlled engines TIME OF COMPLIANCE: Anytime aircraft is struck by lightning

May 25, 2017 MODELS AFFECTED: All Lycoming direct drive and TIGO-541 piston engines TIME OF COMPLIANCE: As per the schedule in Table 1

DATE RELEASED: November 1, 2009 TITLE: YIO-390-B Parts Catalog DOCUMENT PART NUMBER: PC-409-2

DATE RELEASED: March 1, 2016 TITLE: YO-233-B2A Parts Catalog DOCUMENT PART NUMBER: PC-YO-233-B2A

DATE RELEASED: November 1, 2009 TITLE: YIO-390-B Operations & Installation Manual DOCUMENT PART NUMBER: 60297-37

This is a routine test, please disregard. Thank you!

June 13, 2017 MODELS AFFECTED: All Lycoming engines TIME OF COMPLIANCE: At next maintenance event that requires cylinder removal