Service Instruction No. 1009 BE

SERVICE INSTRUCTION NO. 1009 BE

Time Between Overhaul (TBO) Schedules

DATE:

April 24, 2020

SUBJECT:

Time Between Overhaul (TBO) Schedules

MODELS AFFECTED:

Lycoming Engine Models Defined Herein

REASON FOR REVISION:

Added a new paragraph at the end of the Operating Hour Time Period TBO section. Added new engine model IO-390-D to Table 1. Revised Table 2 to include separate listings for engine model O-540-F1B5 for the Robinson R44 and R44 Cadet. Revised Note 10 to include reference to Note 6. Revised the paragraph after the CAUTION in the CALENDAR TIME PERIOD TBO section. Revised Note 15,c.