Service Bulletin No. 601

DATE: November 22, 2011

MODELS AFFECTED

Refer to Tables 1, 2, and 3.

TIME OF COMPLIANCE

At the next scheduled maintenance event or within the next 50 hours, not to exceed 12 months from the date of this Service Bulletin.

This Service Bulletin is notification of required action for non-compliant oil fill tubes P/N 77527 sent from Lycoming Engines from May 17, 2011 to November 4, 2011. The inner machined groove is missing on the non-compliant oil fill tube and must be returned to Lycoming Engines for replacement under normal warranty procedures within 1 year of the date of this Service Bulletin.