SI
SI 1009BF
Lycoming EnginesIssued 2026-07-20
Time Between Overhaul (TBO) Schedules
NOT AN FAA REQUIREMENT — This is a manufacturer document. It is not an FAA Airworthiness Directive and compliance is not required by 14 CFR 39 unless an AD cites it.
Source: Lycoming Engines, retrieved 2026-08-13
