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Piper Seneca III / IV (PA-34-220T) Airplane Maintenance Manual
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AIRPLANE
MAINTENANCE MANUAL
CARD 1 OF 5
PA-34-220T SENECA III
PA-34-220T SENECA IV
THIRD EDITION
PIPER AIRCRAFT CORPORATION
(PART NUMBER 761-751) REVISED: FEBRUARY 5, 1997
1A1

Published by
Technical Publications
Piper Aircraft Corporation
2926 Piper Drive
Vero Beach, Florida 32960
U.S.A.
Member of GAMA
General Aviation
Manufacturers Association
1A2

INTRODUCTION
This PIPER AIRCRAFT Maintenance Manual is prepared in accordance with the GAMA (General
Aviation Manufacturers Association) format. This maintenance manual is divided into various Groups which
enable a broad separation of contents (Chapters) within each group.
The various Chapters are broken down into major systems such as Electrical Power, Flight Controls, Fuel,
Landing Gear, etc. The System/Chapters are arranged more or less alphabetically rather than by precedence or
importance. All System/Chapters are assigned a number, which becomes the first element of a standardized
numbering system. Thus the element “32” of the number series 32-00-00 refers to the System/Chapter on
“Landing Gear”. All information pertaining to the landing gear will be covered in this System/Chapter.
The major System/Chapters are then broken down into Sub-System/Sections. These sections are identified
by the second element of the standardized numbering system. The number “40” of the basic number series
32-40-00 is for the “Wheels and Brakes” portion of the landing gear.
The individual units within a Sub-System/Section may be identified by a third element of the standardized
numbering system, such as 32-40-01. This number could be assigned by the manufacturer to fit the coverage
requirements of the publication.
Example:
CHAPTER/SYSTEM SUB-SYSTEMS
LANDING GEAR WHEELS AND BRAKES
32-40-01
INDIVIDUAL UNITS
NOSE WHEEL REMOVAL
This manual does not contain hardware callouts for installation. Hardware callouts are only indicated
where a special application is required. To confirm the correct hardware used, refer to the PA-34-220T Parts
Catalog P/N 761 750 and FAR 43 for proper utilization.
WARNINGS, CAUTIONS, and NOTES are used throughout this manual to emphasize important information.
— WARNING —
OPERATING PROCEDURES, PRACTICES, ETC., WHICH MAY RESULT IN
PERSONAL INJURY OR LOSS OF LIFE IF NOT CAREFULLY FOLLOWED.
— CAUTION —
OPERATING PROCEDURES, PRACTICES, ETC., WHICH IF NOT
STRICTLY OBSERVED MAY RESULT IN DAMAGE TO EQUIPMENT.
— NOTE —
An operating procedure, condition, etc., which is essential to emphasize.
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 1
Reissued: November 29, 1993
1A3

AEROFICHE EXPLANATION AND REVISION STATUS
The Maintenance Manual information incorporated in this set of Aerofiche cards has been arranged in
accordance with the general specifications of Aerofiche adopted by the General Aviation Manufacturer's
Association, (GAMA). The information compiled in this Aerofiche Maintenance Manual will be kept current
by revisions distributed periodically. These revisions will supersede all previous revisions and will be com-
plete Aerofiche card replacements and shall supersede Aerofiche cards of the same number in the set.
Conversion of Aerofiche alpha/numeric code numbers:
First number is the Aerofiche card number.
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.
To aid in locating the various chapters and related service information desired, the following is provided:
1. A complete manual System/Chapter Index Guide is given for all fiche in this set.
2. A complete list of Illustrations is for all fiche in this set following System/Chapter Index.
3. A complete list of Charts is for all fiche in this set following list of illustration.
4. A complete list of paragraph titles and appropriate Grid location numbers is given at the beginning of
each Chapter relating to the information within that Chapter.
5. Identification of Revised Material:
Revised text and illustrations are indicated by a black vertical line along the left-hand margin of the
frame, opposite revised, added or deleted material. Revision lines indicate only current revisions with
changes, additions to or deletions of existing text and illustrations. Changes in capitalization, spelling,
punctuation, indexing, the physical location of the material or complete page additions are not identi-
fied by revision lines.
A reference and record of the material revised is included in each chapter's Table of
Contents/Effectivity.
The codes used in the effectivity columns of each chapter are defined as follows:
TABLE OF CONTENTS/EFFECTIVITY CODES
Original Issue: None
First Revision: Revision Indication, ( 1R Month-Year)
Second Revision: Revision Indication, (2R Month-Year)
All subsequent revisions will follow with consecutive revision numbers
such as 3R, 4R, etc., along with the appropriate month-year
Added Subject: Revision Identification, (A Month-Year)
Deleted Subject: Revision Identification, (D Month-Year)
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 2
Reissued: November 29, 1993
1A4

PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 3
Reissued: November 29, 1993
Interim Revision: February 5, 1997
1A5
AEROFICHE EXPLANATION AND REVISION STATUS (CONTINUED)
6. Revisions to Maintenance Manual 761 751 issued December 19, 1980, are as follows:
Effectivity Publication Date Aerofiche Card Effectivity
ORG801219 December 19, 1980 1, 2 and 3
CR891220 December 20, 1989 1, 2, 3 and 4
CR931129 November 29, 1993 1, 2, 3, 4 and 5
IR970205 * February 5, 1997 1 and 3
* INTERIM REVISION
Chapter 5 of Card 1 and Chapter 32 of Card 3 have been revised. There are no
other changes included in this maintenance manual. Please discard your current
Cards 1 and 3 and replace them with the revised ones.
The date on Aerofiche cards can not preceed the date noted for the respective card effectivity. Consult the latest
Aerofiche card in the series for current Aerofiche card effectivity.

PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 4
Reissued: November 29, 1993
1A6
SERIAL NUMBER INFORMATION
The serial numbers of the PA-34-220T Seneca III airplanes covered by this Maintenance Manual are as
follows:
34-8133001 through 34-8133277
34-8233001 through 34-8233205
34-8333001 through 34-8333129
34-8433001 through 34-8433088
34-8533001 through 34-8533069
34-8633001 through 34-8633031
3433001 and up
3448005 through 3448037
The serial numbers of the PA-34-220T Seneca IV airplanes covered by this Maintenance Manual are as
follows:
3448038 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, and 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
34 33 001
TYPE CERTIFICATE DESIGNATION
TYPE CERTIFICATE DESIGNATION
MODEL YEAR
MODEL CODE (33 = PA-34-220T)
MODEL SEQUENCE NUMBER
MODEL SEQUENCE NUMBER
MODEL CODE (33 = PA-34-220T)

VENDOR PUBLICATIONS
— WARNING —
WHEN SERVICING OR INSPECTING VENDOR EQUIPMENT INSTALLED
IN PIPER AIRCRAFT, IT IS THE USER’S RESPONSIBILITY TO REFER TO
THE APPLICABLE VENDOR PUBLICATION.
ENGINE:
Overhaul Manual = CONTINENTAL - OVERHAUL MANUAL
Form No. X-30030A
Teledyne Continental Motors - Aircraft Products Division
Mobile, Alabama 36601
Parts Catalog = CONTINENTAL- Form No. X-30031A
Teledyne Continental Motors - Aircraft Products Division
Mobile, Alabama 36601
Operators Handbook = CONTINENTAL - Form No. X-30553
Teledyne Continental Motors - Aircraft Products Division
Mobile, Alabama 36601
PROPELLER:
Overhaul Instructions = HARTZELL COMPACT CONSTANT SPEED and
FEATHERING PROPELLER- P/N 117 D - Hartzell Propeller Inc.
1 Propeller Place
Piqua, Ohio 45356
Service Manual = McCAULEY C500 SERVICES
FULL FEATHERING CONSTANT SPEED
PROPELLER- P/N 7512 01 - McCauley Accessory Division
335 McCauley Drive
P.O. Box 430
Vandalia, Ohio 45377
MAGNETOS:
Installation, Operation
and Maintenance
Instructions = S6LN-25P IGNITION SYSTEM- P/N L-928
Bendix Electrical Components Division
Sidney, New York 13838
VOLTAGE CONTROL:
Overhaul Manual
and Illustrated
Parts List: LAMAR INC.
POWER EQUIPMENT DIVISION
71 Inidel Aveneu
P. O. Box 251
Rancocas, New Jersey 08073
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 5
Reissued: November 29, 1993
1A7

VENDOR PUBLICATIONS (CONTINUED)
AUTOFLIGHT (continued)
Flight Control: Bendix/King
System Flight Line KFC 150
Installation Manual P/N 006-0287-00
System Flight Line KFC 200
Maintenance Manual: P/N 006-5134-01
Vendor Address: Bendix/King Radio Corporation
400 N. Rogers Road
Olathe, Kansas 66062
WHEELS AND BRAKES:
Installation, Maintenance
and Overhaul Manual: Cleveland
Parker Hannifin Corporation
Aircraft Wheel and Brake Division
1160 Center Road
Avion, Ohio 44011
KEVLAR:
A Guide to Cutting and Machining Kevlar Aramid:
KEVLAR Special Products
E.I. DuPont De Nemours & Co. Inc.
Textile Fibers Department
Centre Road Building
Wilmington, Delaware 19898
CORROSION INHIBITING COMPOUND:
DINOL International
25200 Malvina
Box 1065
Warren, Michigan 48090
OXYGEN SYSTEM
Components: Scott Aviation
225 Erie Street
Lancaster, New York 14086
FIRE EXTINGUISHER (PORTABLE)
Polk Fire Extinguisher Service, Inc.
P. O. Box 384
Lakeland, Florida 33802
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 6
Reissued: November 29, 1993
1A8

PIPER PUBLICATIONS
AUTOFLITE:
AutoFlight II Service
Manual = Piper P/ N 761 481
Pitch Trim Service
Manual = Piper P/N 753 771
AutoControl IIIB and
Altimatic IIIB Service
Manual = Piper P/N 753 502
Altimatic IIIC Service
Manual = Piper P/N 761 602
PARTS CATALOG: 761 750
PROGRESSIVE INSPECTION
50 HOUR EVENT: 761 837
PERIODIC REPORT 230 1061
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 7
Reissued: November 29, 1993
1A9

SYSTEM/CHAPTER INDEX GUIDE
— NOTE —
The following chapters are not applicable to this Maintenance
Manual: 31, 36, 38, 49, 53, 54, 60, 72, 78, and 83.
SYSTEM/ SUB-SYSTEM/
CHAPTER SECTION TITLE GRID NO.
4 AIRWORTHINESS LIMITATIONS 1B5
00 General
5 TIME LIMITS/MAINTENANCE CHECKS 1B11
10 Time Limits
20 Scheduled Maintenance
Checks
50 Programmed Inspection
Unscheduled Maintenance
Checks
6 DIMENSIONS AND AREAS 1C3
10 Dimensions and Areas
20 Station References
30 Access and Inspection Provisions
7 LIFTING AND SHORING 1C16
00 General
Jacking
8 LEVELING AND WEIGHING 1C22
10 Leveling
20 Weighing
9 TOWING AND TAXIING 1D5
10 Towing
20 Taxiing
10 PARKING AND MOORING 1D12
10 Parking
20 Mooring
11 REQUIRED PLACARDS 1D18
20 Exterior Placards/Markings
30 Interior Placards/Markings
Meyercord Decals
PIPER AIRCRAFT
PA-34-220T
AIRPLANE MAINTENANCE MANUAL
Introduction
Page 8
Reissued: November 29, 1993
1A10
SYSTEM/CHAPTER INDEX GUIDE
SYSTEM/ SUB-SYSTEM/
CHAPTER SECTION TITLE GRID NO.
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Print one or all pages of your manual
$58.99
The Piper Seneca III / IV (PA-34-220T) Airplane Maintenance Manual covers the following models:
- PA-34-220T SENECA III
- PA-34-220T SENECA IV
This third edition, published by PIPER AIRCRAFT CORPORATION with part number 761-751, offers 1082 pages of detailed maintenance information revised on February 5, 1997. It is designed for DIY repair enthusiasts looking to perform thorough airframe and systems maintenance on their aircraft. The manual is provided in English and accessible across a variety of devices, ensuring convenience whether in a workshop or on the go.