CESSNA P337 — Flight Manual

This Service Letter provides critical maintenance information regarding the CD Series combustion heaters used in various aircraft, including the Cessna P337 and T337H. It details a configuration change involving the replacement of the existing welded heater fuel solenoid shroud with a new die-formed version. This change aims to improve product reliability and standardize part numbers across the Janitrol Aero combustion heater lines. The document outlines the necessary materials, removal and installation procedures, and safety warnings to ensure compliance with the latest revisions. It is essential for maintenance personnel to follow these guidelines to maintain safety and operational integrity.

• This Service Letter applies to Cessna P337 and T337H models.
• The document outlines a change from a welded to a die-formed heater fuel solenoid shroud.
• Specific part numbers for materials required are listed in Table 1.
• Installation procedures must be performed by qualified personnel to ensure safety.
• Operational checks must be conducted post-installation to verify functionality.