Service Instruction No. 1148 C

Use of Carburetor Heat Control

Publications

Supersedes Service Instruction No. 1148C

October 12, 2007

MODELS AFFECTED

All Lycoming engines using float type carburetors.

TIME OF COMPLIANCE

During engine operation.

Under certain moist atmospheric conditions (generally at a relative humidity of 50% or greater) and at temperatures of 20° to 90°F it is possible for ice to form in the induction system.

Get It Exchanged

Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.