Piper PA-39 Twin Comanche C/R — Wiring Diagram

This service manual provides comprehensive maintenance and service instructions for the Piper PA-30 and PA-39 Twin Comanche aircraft. It is designed for use by qualified personnel and covers a wide range of topics including handling, servicing, inspection, and maintenance of various aircraft systems. The manual includes detailed descriptions of the aircraft's structure, systems, and components, along with troubleshooting guides and maintenance procedures. Specific sections are dedicated to the PA-39 model, ensuring that users have access to the most relevant information for their aircraft. The manual is periodically updated to reflect the latest service information and revisions.

• The PA-39 Twin Comanche has a total fuel capacity of 90 U.S. gallons, with optional tip tanks adding 15 gallons each.
• The aircraft is powered by two Lycoming IO-320 engines, each producing 160 horsepower.
• The landing gear is an electrically operated tricycle gear system.
• The manual includes specific sections for troubleshooting various systems, including the fuel and electrical systems.
• Regular inspections and maintenance are critical for safe operation.