Robinson R44 — Systems Description

This document is a Service Information Letter (SIL) specifically addressing the RSA-10AD1 fuel injection servo used in the Robinson R44 II helicopters equipped with Lycoming IO-540-AE1A5 engines. It provides repair shops with essential flow bench limits and service information for the RSA-10AD1 fuel injection servo, part number 2576630-4. The document includes revisions that correct previous drafting errors and outlines the applicability of the service information to the specified fuel injection servo. It serves as a reference for maintenance and repair procedures, ensuring that technicians have the necessary details to perform their tasks effectively.

• The RSA-10AD1 fuel injection servo is applicable to Robinson R44 II helicopters with Lycoming IO-540-AE1A5 engines.
• Part number for the fuel injection servo is 2576630-4.
• Calibration limits are specified under test specification 30111-01 for new units.
• Service limits are specified under test specification 30112-01 for new units.
• The document includes a history of changes from 2002 to 2005, detailing updates to part numbers and assembly specifications.