Service Instruction No. 1009BF

SERVICE INSTRUCTION NO. 1009 BF

Time Between Overhaul (TBO) Schedules

DATE:

July 20, 2026

SUBJECT:

Time Between Overhaul (TBO) Schedules

MODELS AFFECTED:

Lycoming Engine Models Defined Herein except those affected by and not in compliance with AD 2012-19-01

REASON FOR REVISION:

Removed language for Lycoming approved FAA-PMA parts. Removed the NOTICE regarding TBOs for engines used for crop dusting. Added ICA statement and first paragraph to page 1. Added language to subsection b. on page 1. Added CAUTION on page 2. Added language to CAUTION on page 2. Added language to CAUTION on page 3. Added columns to Table 1 and Table 2 for Factory New or Factory Rebuilt engines. Changed hours and notes for some engine models in Table 1 and Table 2. Added footnote for TEO-540-A1A, - C1A to Table 1. Revised Notes 6, 11 and 15.