Service Instruction No. 1132 B
Supersedes Service Instruction No. 1132A
June 18, 2010
All Lycoming Opposed Series Aircraft Engines with Magnetos.
TIME OF COMPLIANCE
During Pre-Flight Inspection
A basic magneto drop-off check based on engine speed is typically done during the pre-flight inspection to determine the loss of engine speed that occurs when magnetos are switched from BOTH magnetos to one (LEFT or RIGHT) magneto. The maximum drop-off limit is specified in most Lycoming publications as Revolutions Per Minute (RPM) from a stated engine speed.
Get It Exchanged
Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.