
AIRPLANE PARTS CATALOG
PA-34-220T
SENECA III
SENECA IV
CARD 1 OF 3
PIPER AIRCRAFT
CORPORATION
1A1
REISSUED: NOVEMBER 29, 1993 [PART NUMBER 761 750]

Published by
Technical Publications
Piper Aircraft Corporation
2926 Piper Drive
Vero Beach, Florida 32960
U.S.A.
Member of GAMA
General Aviation
Manufacturers Association
Reissued: November 29, 1993
1A2
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG

AEROFICHE EXPLANATION AND REVISION STATUS
The Parts Catalog information in this set of Aerofiche cards is arranged in accordance with general specifications of Aerofiche adopted
by the General Aviation Manufacturer's Association.
Conversion of Aerofiche alpha/numeric code numbers:
First number is the Aerofiche card identifier.
Letter is the horizontal line reference per card.
Second number is the vertical line reference per card.
Example: 2J16 = Aerofiche card number two of given set, Grid location J16.
REVISIONS
The information compiled in this Aerofiche Parts Catalog is kept current by revisions distributed periodically. Each revision is a complete
Aerofiche card replacement and supersedes Aerofiche cards of the same number in the set.
Revisions to this PA-34-220T Parts Catalog issued December 15, 1980 are as follows:
Aerofiche
Effectivity Publication Date Card Effectivity
ORG 801215 December 15, 1980 1 and 2
PR 810421 April 21, 1981 1 and 2
PR 810909 September 9, 1981 1 and 2
PR 820111 January 11, 1982 1 and 2
PR 820713 July 13, 1982 1 and 2
PR 830214 February 14, 1983 1 and 2
PR 830812 August 12, 1983 1 and 2
PR 840313 March 13, 1984 1 and 2
PR 840808 August 8,1984 1 and 2
Revisions to this PA-34-220T Parts Catalog reissued December 20, 1989 are as follows:
Aerofiche
Effectivity Publication Date Card Effectivity
CR 891220 December 20, 1989 1 and 2
Revisions to this PA-34-220T Parts Catalog reissued November 29, 1993 are as follows:
Aerofiche
Effectivity Publication Date Card Effectivity
CR 931129 November 29, 1993 1, 2, and 3
NOTE: Refer to Aerofiche Customer Service Information Catalog (1753 755) for revision dates and card
effectivities for this parts catalog.
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A3
Reissued: November 29, 1993

INTRODUCTION
This illustrated Parts Catalog provides simple, positive identification of replacement parts for the Piper Model PA-34-220T, manufactured by
the Piper Aircraft Corporation of Vero Beach, Florida.
NOTE: DO NOT USE THIS CATALOG FOR RIGGING AND INSTALLATION PURPOSES.
1. The catalog is divided into fourteen major sections as follows:
a. Section I to Xlll inclusive contains all replacement parts for the complete airplane. Each section is subdivided and each division
includes an illustration and a parts listing.
b. Section XIV is the Miscellaneous Group. This group includes an illustration and parts list for the Placards and Exterior Stencils and a
listing of the Optional Equipment Kits, Repair Kits and Special Tools.
2. The following is a brief explanation of the columns in the parts lists: (Refer to EXAMPLE below).
a. The FIGURE AND INDEX NUMBER column indicates the illustration figure number and its part index number. EXAMPLE: (2-1), the
2 is the figure number and the 1 is the index number. The figure number appears only at the top of each parts list page.
b. The PART NUMBER column contains the identifying number of the replacement part and this number must be shown on all parts
orders.
c. The CODE column is for the purpose of indicating special uses of the part. An explanation of the letter code used is shown on the
grid (page) preceding each parts listing and pertains to that listing only.
d. The NOMENCLATURE column indicates the part name. This name must be shown on all parts orders.
e. The NO. REQ. (Number Required) column represents the total quantity of parts used per figure when the part is not indented and the
quantity of parts used per assembly when the part is indented. The symbol AR listed in this column means As Required.
f. The SERIAL NUMBERS AFFECTED column indicates the part application by airplane serial number.
EXAMPLE
Figure
and Part No. SERIAL NUMBERS
Index Number Code NOMENCLATURE Req. AFFECTED
Number
2-1 XXXXX-XX DOOR ASSEMBLY - Baggage compartment X
-2 XXXXX-XX * TUBE ASSEMBLY - Baggage door latch X
-3 XXXXX-XX * * CLEVIS - Door latch tube assembly X
-4 XXXXX-XX * * CLIP - Door latch tube assembly X
In the nomenclature column, the next higher assembly relationship of items covered is shown by the degree of indention of each
item and is indicated by an asterisk (*). One asterisk signifies one indention, two signifies two indentions, etc. The example listing
above is interpreted as follows:
If the DOOR ASSEMBLY (not indented) is ordered, it will include the three items indented under the DOOR ASSEMBLY.
If the TUBE ASSEMBLY (indented one space) is ordered, it will include the two items indented under the TUBE ASSEMBLY.
If you want only a CLEVIS or CLIP, you order only that item.
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A4
Reissued: November 29, 1993

3. Piper Aircraft will supply all attaching parts to its customers in any quantity. When purchasing the attaching parts such as nuts, bolts,
washers, cotter pins, etc. from Piper Aircraft, the customer or service center need only order the part(s) needed. However, parts such as
rivets or consumables may have requirements in economical measures, such as pounds, gallons, etc.
4. All items of Optional Equipment are contained in the parts list in their proper sequence and sections. These items were not marked
optional, since they are fully identified by their descriptions.
5. The Installation Drawings listed at the beginning of each figure are available for purchase. All other drawings are proprietary and not for
sale. Contact your local Piper Distributor for more information.
HOW TO IDENTIFY A PART
IF YOU KNOW WHAT IT LOOKS LIKE
AND KNOW WHERE IT IS LOCATED
1. Refer to Figure 1 to determine the section number in which the part is used.
2. Refer to the Table of Contents and locate the section. Note the figure numbers that illustrate the various subgroups of this main section.
Select the figure title you think might contain the part you wish to identify and proceed to the grid (page) specified. If you don't find the
part on this illustration, try another figure in this group.
3. Refer to Figure and Index Number in the parts listing for description of the part.
HOW TO ORDER PARTS
When ordering parts for your Piper Airplanes, please observe the following instructions:
1. Place your order with your local distributor or service center.
2. Specify the model and serial number of your airplane.
3. Specify Part Number, Name, Type and Quantity Required.
4. Specify the method of shipment - Freight, express, parcel post, air express, air freight or air parcel post. Where the nature of the
shipment requires it or when no instructions are given, we reserve the right to ship the most suitable way.
5. Request price and delivery information prior to order placement.
GENERAL INFORMATION
1. Shortages
All orders are checked before leaving our Shipping Department. A packing slip is enclosed with the shipment. Claims for errors or
shortages must be made within three days after receipt of orders.
2. Returned Goods
No material should be returned without first securing written permission. Material sent in without notice will be held at the owner's risk
for thirty days and will then be disposed of as we see fit.
Transportation charges must be prepaid on returned goods or the shipment will be refused.
3. Transportation Liabilities
The Piper Aircraft Corporation cannot be held liable for damages to parts in transit from the factory. If a shipment is received in a
damaged condition, have the delivery man or transportation company make a notation of the damage and file your claim with the carrier.
In case of concealed damage, do not attempt to remove the part from the shipping container, or try to repair the damage, call the carrier
and have their claim agent inspect the damage before filing your claim with the carrier.
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A5
Reissued: November 29, 1993

PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A6
P A-34-220T SERIAL NUMBER INFORMA TION
The serial numbers of the PA-34-220T aircraft covered by this Parts Catalog are as follows:
(Seneca III 14 Volt, Seneca III 28 Volt, and Seneca IV aircraft are included in these serial numbers.)
34-8133001 thru 34-8133277
34-8233001 thru 34-8233205
34-8333001 thru 34-8333129
34-8433001 thru 34-8433088
34-8533001 thru 34-8533069
34-8633001 thru 34-8633031
3433001 and up
3448005 and up
SERIAL NUMBER EXPLANATION
The serial number on the Manufacturer's Identification Plate is based on either a 3 or 4 set numbering system. In the 4-set
system, the first set defines the Type Certificate Designation, the second set is the Model Year, the third set is the Model
Code, while the fourth set is the Model Sequence Number (within a model year).
The 3-set system omits the model year* and begins a new sequence with 3433001. This new sequence continues without
renumbering for a new year.
EXAMPLE
34 81 33 001
TYPE CERTIFICATE DESIGNATION MODEL SEQUENCE NUMBER
(within a model year)
*MODEL YEAR MODEL CODE
(33 = PA-34-220T SENECA III 14 VOLT)
EXAMPLE
34 33 001
34 48 001
TYPE CERTIFICATE DESIGNATION MODEL SEQUENCE NUMBER
(without regard for model year)
MODEL CODE
(33 = PA-34-220T SENECA III 14 VOLT)
(48 = PA-34-220T SENECA III 28 VOLT AND
PA-34-220T SENECA IV)
Reissued: November 29, 1993

STANDARD PAINT CHART
MFG. PIPER PART NUMBER
NO. QUART GALLON
EXTERIOR
POLYURETHANE ENAMEL (Dupont Imron)
Baja Yellow H7850U 4175 461 1175 461
Juneau White H7848U 4175 462 1175 462
Ocala Orange H7857UM 4175 463 1175 463
Madrid Red H7851UM 4175 464 1175 464
Bahama Blue H7853U 4175 465 1175 465
Alvocado H7852U 4175 466 1175 466
Las Vegas Gold 5242U 4176 121 1176 121
Dakota Black 99U 4175 467 1175 467
Denver Brown H7859U 4176 122 1176 122
Matador Red H7858U 4175 468 1175 468
Royal Blue H7856U 4175 469 1175 469
Hickory Brown H7855U 4175 470 1175 470
Silver 4531U 4176 123 1176 123
Lime Green H7854U 4175 460 1175 460
Sage Green K7887U 4176 132 1175 460
Firethorn K7888UW 4176 133 1176 133
Buckskin K7890U 4176 135 1176 135
Dark Blue K7891U 4176 136 1176 136
Platinum Gray N7819U 4176 126 1176 126
Sandalwood Tan N7818U 4176 127 1176 127
Dark Claret K7886U 4176 131 1176 131
Burnished Gold N8068U 4763 528 1763 528
Light Blue K8149U 4763 529 1763 529
Dark Saddle N8070U 4763 530 1763 530
Dark Green N8071U 4763 531 1763 531
Saffron K7889UH 4763 532 1763 532
Light Sandalwood W8275 4763 533 1763 533
Light Platinum W8274 4763 534 1763 534
Catalyst (Activator) 912S 4179 950 1179 950
Reducer Y8485S 4179 145 1179 145
Retarder 8100S 4179 599 1179 599
Accelerator 189S 4179 951
POLYURETHANE PRIMER (Dupont Imron)
Wash Primer B9287 4170 766 1179 766
Wash Primer Thinner K1733 4179 452 1179 452
Acid Thinner B9289 4179 403 1179 403
INTERIOR
INSTRUMENT PANEL
Cadet Dark Grey 170 902
Grey II 170 907
NOTE: SEE SERVICE SPARES LETTER 407 FOR AVAILABILITY OF COLOR PAINT FOR THERMOPLASTIC INTERIOR PANELS.
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A7
Reissued: November 29, 1993

THIS PAGE INTENTIONALLY LEFT BLANK
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A8
Reissued: November 29, 1993

TABLE OF CONTENTS
FIGURE NUMBER FIGURE TITLE GRID NUMBER
1 Complete Airplane.....................................................................................................................1A15, 2A15, 3A15
SECTION I
WING GROUP
2 Wing Installation............................................................................................................................... 1A17
3 Wing Leading Edge Assembly......................................................................................................... 1A22
4 Wing Trailing Edge Assembly........................................................................................................... 1B5
5 Aileron Assembly.............................................................................................................................. 1B10
6 Flap Assembly.................................................................................................................................. 1B13
SECTION II
FUSELAGE GROUP
7 Fuselage Assembly - Complete....................................................................................................... 1B17
8 Fuselage Nose Cone Assembly....................................................................................................... 1B20
9 Fuselage Upper Forward Cockpit Assembly.................................................................................... 1B23
10 Fuselage Upper Center Cockpit Assembly...................................................................................... 1C6
11 Fuselage Upper Aft Cockpit Assembly............................................................................................. 1C10
12 Fuselage Lower Forward Cockpit Assembly.................................................................................... 1C13
13 Fuselage Lower Aft Cockpit Assembly............................................................................................. 1C17
14 Fuselage Aft Section........................................................................................................................ 1C21
15 Fuselage Forward Cabin Door......................................................................................................... 1D1
16 Fuselage Aft Cabin Door.................................................................................................................. 1D6
17 Fuselage Aft Cargo Door.................................................................................................................. 1D12
18 Fuselage Forward Baggage Door Assembly.................................................................................... 1D17
19 Fuselage Enclosure Installation....................................................................................................... 1D20
SECTION III
TAIL SURFACES GROUP
20 Tail Surfaces Installation................................................................................................................... 1E1
21 Stabilator Assembly.......................................................................................................................... 1E5
22 Fin Assembly.................................................................................................................................... 1E9
23 Rudder Assembly............................................................................................................................. 1E12
SECTION IV
LANDING GEAR GROUP
24 Nose Gear Installation...................................................................................................................... 1E15
25 Nose Gear Assembly....................................................................................................................... 1E19
26 Nose Wheel Assembly (Cleveland).................................................................................................. 1E23
26A Nose Wheel Assembly (McCauley).................................................................................................. 1F2
27 Main Gear Installation...................................................................................................................... 1F5
28 Main Gear Assembly........................................................................................................................ 1F9
29 Main Wheel Assembly (Cleveland).................................................................................................. 1F13
30 Brake Assembly............................................................................................................................... 1F16
31 Nose and Main Gear Door Actuation Installations........................................................................... 1F19
32 Brake System Installation................................................................................................................. 1F23
33 Toe Brake Installation....................................................................................................................... 1G2
34 Toe Brake Master Cylinder Assembly.............................................................................................. 1G5
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A9
Reissued: November 29, 1993

TABLE OF CONTENTS
FIGURE NUMBER FIGURE TITLE GRID NUMBER
SECTION V
CABIN EQUIPMENT GROUP
35 Forward Baggage Compartment Finishing Installation.................................................................... 1G9
36 Cockpit Finishing Installation............................................................................................................ 1G12
36A Cockpit Finishing Installation (s/n 3448038 and up)......................................................................... 1G18
37 Window Curtains Installation............................................................................................................ 1G21
37A Window Shades and Reveals Installation (s/n 3448038 and up)..................................................... 1G24
38 Carpet Installation............................................................................................................................ 1H3
39 Forward Fresh Air Duct and Headliner Installation........................................................................... 1H9
39A Forward Fresh Air Duct and Headliner Installation (s/n 3448038 and up)....................................... 1H12
40 Seats Installation.............................................................................................................................. 1H18
41 Vertically Adjustable Front Seat Assembly....................................................................................... 1H24
42 7th Seat Installation.......................................................................................................................... 1I5
43 Aft Facing Seat Assembly - Center.................................................................................................. 1I8
44 Club Seating Installation................................................................................................................... 1I11
SECTION VI
INSTRUMENTS GROUP
45 Instrument Panel Installation (14 Volt System)................................................................................. 1I17
45A Instrument Panel Installation (28 Volt System, includes s/n 3448001 thru 3448037)................... 1I21
45B Instrument Panel Installation (s/n 3448038 and up)......................................................................... 1J1
46 Gyro Vacuum System Installation .................................................................................................... 1J5
47 Pitot Static System Installation......................................................................................................... 1J8
SECTION VII
POWER PLANT GROUP
48 Power Plant Installation.................................................................................................................... 1J13
49 Engine Instrument Lines Installation................................................................................................ 1J17
50 Engine Baffle Installation.................................................................................................................. 1J21
51 Engine Cowl Assembly..................................................................................................................... 1K2
52 Cowl Flap Installation....................................................................................................................... 1K5
53 Two Blade Propeller Assembly (Hartzell)......................................................................................... 1K8
54 Three Blade Propeller Assembly (McCauley).................................................................................. 1K11
55 Propeller Synchrophaser System Installation (s/n 34-8133002 thru 34-8133195)........................... 1K15
55A Propeller Synchrophaser System Installation (s/n 34-8133001, 34-8133196 and up, and
3448001 and up)................................................... 1K18
55B Propeller Unfeathering System Installation (s/n 34-8333001 and up, 3448001 and up).................. 1K21
56 Engine Controls Installation.............................................................................................................. 1L2
57 Quadrant Assembly.......................................................................................................................... 1L6
58 Nacelle Installation........................................................................................................................... 1L9
SECTION VIII
FUEL SYSTEM GROUP
59 Fuel System Installation - Wing and Fuselage................................................................................. 2A17
60 Fuel System Installation - Engine..................................................................................................... 2A21
61 Fuel Tank Assemblies...................................................................................................................... 2A24
PIPER AIRCRAFT
PA-34-220T
AIRPLANE PARTS CATALOG
1A10
Reissued: November 29, 1993
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Description
The Piper PA-34-220T Seneca III and Seneca IV Illustrated Parts Catalog is a comprehensive manual consisting of 577 searchable pages. It is a valuable resource for professional mechanics and DIY enthusiasts alike, providing detailed illustrations and part information for the specified aircraft models.