Service Instruction

SI 1257

Lycoming Engines

Issued
2008-05-16
Models covered
2
SI

SI 1257

Lycoming Engines

Issued 2008-05-16

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.

Horsepower, Manifold Pressure and RPM Values

Source: Lycoming Engines, retrieved 2026-09-01

Applies to 2 models in our index

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