Piper PA-34-220T Seneca III & Seneca IV Illustrated Parts Catalog PDF

Description

Piper PA-34-220T Seneca III & Seneca IV Illustrated Parts Catalog

This is the complete illustrated airplane parts catalog for the Piper PA-34-220T Seneca III and Seneca IV, published by Piper Aircraft Corporation Technical Publications. It is the reference used to identify, look up, and order replacement parts for every major airframe and system assembly on these twin-engine aircraft. Every part in the catalog carries a Piper part number and a figure-and-index reference tied directly to the exploded illustrations, so the correct component can be confirmed visually before ordering. Whether you are maintaining a Seneca III, restoring a Seneca IV, or supporting a fleet, this Piper PA-34-220T Seneca III & Seneca IV Illustrated Parts Catalog is the lookup tool that connects the right part number to the right position on the aircraft.

File Details

• Manual Type: Illustrated Airplane Parts Catalog
• Brand / Publisher: Piper Aircraft Corporation — Technical Publications, Vero Beach, Florida
• Aircraft Models: PA-34-220T Seneca III and Seneca IV
• Language: English
• File Format: PDF
• Page Count: 549 pages
• Publication History: Issued December 15, 1980; kept current with revisions through March 10, 2009
• Organization: Fourteen major sections, each with its own illustration and parts listing

Chapters Covered

The catalog is divided into sections that mirror the aircraft itself. Each section opens with an exploded illustration and is followed by a parts listing keyed to that figure.

• Wing Group — wing installation, leading edge assemblies, trailing edge assemblies, aileron assembly
• Fuselage Group — complete fuselage, upper and lower cockpit assemblies, forward cabin door, aft cabin door, cargo door, forward baggage door, windows and enclosure
• Tail Surfaces — stabilator, fin, rudder, dorsal fin, tail cone fairings
• Landing Gear — nose gear installation and assembly, main gear installation and assembly, nose wheel, main wheels, brake assembly, toe brake installation
• Cabin Equipment Group — forward baggage compartment finishing, cockpit finishing, window curtains and shades, carpet installation, headliner, seats, vertically adjustable front seat, seventh seat, aft-facing center seat, club seating
• Instruments Group — instrument panel installation (14 V and 28 V), gyro vacuum system, pitot static system
• Power Plant Group — power plant installation, engine baffles, engine cowl, cowl flap, two-blade Hartzell propeller, three-blade McCauley propeller, propeller synchrophaser, propeller unfeathering system, engine controls, quadrant assembly, nacelle installation
• Fuel System Group — wing and fuselage fuel system, engine fuel system, fuel tank assemblies
• Flight Controls — aileron control, rudder control, rudder trim, stabilator control, stabilator trim, flap control (mechanical and electric), control wheel, bobweight, rudder pedal
• Hydraulic System Group — hydraulic system installation
• Environmental Group — heat and defrost, Janitrol heater, heater ducts, heater fuel system, heater controls, aft fresh air duct, air conditioning compressor and refrigerant lines, air conditioning duct and evaporator, air conditioning condenser and scoop, oxygen system, pneumatic deicer
• Electrical System Group — electrical system installation (14 V and 28 V), instrument panel electrical, circuit breaker panel, electrical/avionics switches, ice protection controls, air conditioning electrical, external power supply, battery installation, strobe lights, landing light, propeller electric deicer, heated glass panel
• Electronics Group — Century 21/31/41 autopilot installations, King KFC-200 and KAP 150/KFC 150 autopilot/flight director, Piper automatic locator (ELT 10 and ELT 910), radar altimeter (Bonzer and King), Narco AR 850 encoder, radio antenna system and static wicks, radar systems, electric pitch trim, avionics cooling
• Miscellaneous Group — placards and exterior stencils, optional equipment kits, repair kits, special tools, consumables, avionics installations

Each figure is supported by a parts listing that carries the figure and index number, Piper part number, code, nomenclature, quantity required, and the serial-number effectivity for that part. That last column is what makes this catalog so valuable in practice: it shows at a glance whether a part applies to a specific Seneca III or Seneca IV by serial number, and it flags optional equipment and service-bulletin-linked changes. The introduction also explains the column layout, the indent convention for sub-assemblies, and the code letters used for special uses of a part, so the reader can interpret any listing without guessing.

What This Parts Catalog Does for You

A parts catalog is not a repair guide — it is the identification tool that keeps every repair, inspection, and rebuild on the right part. With this Piper PA-34-220T Seneca III & Seneca IV Illustrated Parts Catalog, you can locate the exact part number for a component by working from the illustration to the listing, confirm that the part applies to the aircraft’s serial number range, and check whether a related kit or optional-equipment variant changes the part required. That matters on a twin like the Seneca, where the same assembly can carry different part numbers depending on whether air conditioning, oxygen, a synchrophaser, or a specific propeller installation is fitted.

The exploded drawings also make excellent visual references during teardown and reassembly. Being able to see the order of components, the orientation of fittings, and the hardware that attaches an assembly saves time on the bench and reduces the risk of installing the wrong piece. For owners working with a shop, arriving with the correct figure and index number turns a vague request into a precise part order that the distributor can fill on the first try.

The catalog also documents the parts that surround the aircraft rather than the structure itself — placards and exterior stencils, baggage tie-downs, sun visors, cup holders, seat belts and shoulder harnesses, and the optional equipment kits that Piper released over the life of the type. That makes it useful for owners chasing down cosmetic items and for restorers trying to return a Seneca to the configuration it left the factory with.

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Instant PDF Delivery

This Piper PA-34-220T Seneca III & Seneca IV parts catalog is delivered as a downloadable PDF. There is no printed book to ship and no waiting: the file is available immediately after purchase and can be opened on a phone, tablet, laptop, or desktop computer. Pages can be printed for the hangar or shop and marked up freely, and the file can be stored in a maintenance folder alongside the airframe logbooks. Because the catalog is organized by figure and index number, jumping between the illustration and the parts listing is straightforward, and the layout makes it easy to look up a part number or nomenclature when a component is already in hand.

If you maintain, repair, or restore a Piper PA-34-220T Seneca III or Seneca IV, this illustrated parts catalog belongs in your technical library — it is the fastest way to go from a part on the aircraft to the part number you need to order.