The Piper PA-34-220T Seneca III Seneca IV Illustrated Parts Catalog provides a comprehensive guide to the components of these popular aircraft models. This detailed manual features over 577 pages of meticulously organized information, making it an indispensable resource for maintenance professionals, pilots, and aircraft owners. The catalog offers detailed illustrations and descriptions of every part, ensuring accurate identification and ordering. With its searchable format, you can quickly find the specific information you need, streamlining the maintenance process and minimizing downtime. This manual covers a wide range of systems, including the engine, airframe, avionics, and more, making it a valuable reference for all aspects of Seneca III and Seneca IV aircraft maintenance.

The Piper PA-34-220T Seneca III and Seneca IV are twin-engine, high-wing, fixed-tricycle gear general aviation aircraft produced by Piper Aircraft. The Seneca III, introduced in 1978, was an updated version of the earlier Seneca II, featuring a revised wing design with increased span and a T-tail configuration. This provided improved performance, stability, and handling characteristics. The Seneca IV, which debuted in 1981, further enhanced the design with a more powerful engine option, the Lycoming IO-540-K1A5, delivering 220 horsepower per engine. Both models were equipped with a spacious cabin accommodating up to six occupants, making them popular choices for business travel, flight training, and personal transportation. The Seneca III and Seneca IV have proven to be versatile and reliable aircraft, earning a reputation for their robust construction and user-friendly flight characteristics. Their fixed-tricycle gear design provides excellent ground handling, while the high-wing configuration offers excellent visibility for pilots. The spacious cabin, with its comfortable seating and generous cargo space, adds to the aircraft's appeal for both short and long-haul travel. The Seneca III and Seneca IV are still commonly found in flight schools and for private use, demonstrating their enduring appeal and value in the general aviation market.