Service Instruction No. 1132 B

Magneto Drop-Off

Publications

Supersedes Service Instruction No. 1132A

June 18, 2010

MODELS AFFECTED

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.

DOWNLOAD PUBLICATION
header_0

Product Support Network

Lycoming has a worldwide product support network so you can access the technical, training, and service information you need at your own convenience.

We are here to help. As a Lycoming customer, you have access to our worldwide team of authorized distributors and service centers. The Lycoming team helps you stay up-to-date on industry insights, and provides information about how to care for your engine.

Learn more

Get It Exchanged

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

Contact Us