Hartzell HC-A6A-3 Series User manual

HARTZELL PROPELLER INC.
One Propeller Place
Piqua, Ohio 45356-2634 U.S.A.
Telephone: [phone]
Fax: [phone]
MANUAL REVISION TRANSMITTAL
Manual 144 (61-10-44)
Six-Blade Lightweight Turbine Propeller
Overhaul Manual
REVISION 5dated April 2023
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Six Blade Lightweight Turbine Propeller
Overhaul Manual
HC-A6A-3( )
Hartzell Propeller Inc.
One Propeller Place
Piqua, Ohio 45356-2634 U.S.A.
Phone: [phone]
Fax: [phone]
Manual No. 144
61-10-44
Revision 5
April 2023

Inside Cover
Rev. 5 Apr/23
61-10-44
COVER
HARTZELL PROPELLER OVERHAUL MANUAL
144
© 1987, 2003, 2017, 2021, 2022, 2023 - Hartzell Propeller Inc. - All rights reserved

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REVISION HIGHLIGHTS
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REVISION 5 HIGHLIGHTS
Revision 5, dated April 2023, incorporates the following:
Front matter (Cover, Revision Highlights, etc.), has been revised to match this revision.
Updated the Hartzell Propeller Inc. logo on the cover and revised the header on all pages.
Minor language/format changes and renumbering, if applicable are marked with a revision
bar, but are not listed below.
• CHECK
• Revised the section, "Hex Head Bolt"
• Revised the section, "Beta Rod"
• Revised the section, "Bearing Race"
• FITS AND CLEARANCES
• Revised the section, "Blade Tolerances"
• Removed Table 8-2, "Blade Tolerances"
• ILLUSTRATED PARTS LIST
• Revised the illustrated parts list for the D-1066 Hub Unit

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REVISION 5 HIGHLIGHTS
1. Introduction
A. General
(1) This is a list of current revisions that have been issued against this manual.
Please compare to RECORD OF REVISIONS page to make sure that all
revisions have been added to the manual.
B. Components
(1) Revision No. indicates the revisions incorporated in this manual.
(2) Issue Date is the date of revision.
(3) Comments indicates the level of the revision.
(a) New Issue is a new manual distribution. The manual is distributed in its
entirety. All the revision dates are the same and no change bars are used.
(b) Reissue is a revision to an existing manual that includes major content
and/or major format changes. The manual is distributed in its entirety. All
the revision dates are the same and no change bars are used.
(c) Major Revision is a revision to an existing manual that includes major
content or minor format changes over a large portion of the manual. The
manual is distributed in its entirety. All the revision dates are the same, but
change bars are used to indicate the changes incorporated in the latest
revision of the manual.
(d) Minor Revision is a revision to an existing manual that includes minor
content changes to the manual. Only the revised pages of the manual are
distributed. Each page retains the date and the change bars associated
with the last revision to that page.
Revision No. Issue Date Comments
Original Aug/87 New Issue
Revision 1 Apr/03 Minor Revision
Revision 2 Aug/17 Reissue
Revision 3 Aug/21 Minor Revision
Revision 4 Jun/22 Minor Revision
Revision 5 Apr/23 Major Revision

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RECORD OF REVISIONS 61-10-44 Page 1
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Revision Number Issue Date Date Inserted Inserted By
5 Apr/23 Apr/23 HPI
RECORD OF REVISIONS
This is a record of revisions inserted into this manual.
Revision 5 includes all prior revisions.

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RECORD OF TEMPORARY REVISIONS 61-10-44 Page 1
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Temporary
Revision No.
Section/
Page
Issu e
Date
Date
Inserted
Inserted
By
Date
Removed
Removed
By
RECORD OF TEMPORARY REVISIONS
Update this page to show all temporary revisions inserted into this manual.
Revision 2 includes all prior temporary revisions, up to and including TR-009.

RECORD OF TEMPORARY REVISIONS 61-10-44 Page 2
Rev. 5 Apr/23
HARTZELL PROPELLER OVERHAUL MANUAL
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RECORD OF TEMPORARY REVISIONS
Update this page to show all temporary revisions inserted into this manual.
Revision 2 includes all prior temporary revisions, up to and including TR-009.
Temporary
Revision No.
Section/
Page
Issu e
Date
Date
Inserted
Inserted
By
Date
Removed
Removed
By

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SERVICE DOCUMENT LIST
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SERVICE DOCUMENT LIST
CAUTION 1: DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM
ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST
RECENT REVISION OF THE SERVICE DOCUMENT. INFORMATION
CONTAINED IN A SERVICE DOCUMENT MAY BE SIGNIFICANTLY
CHANGED FROM EARLIER REVISIONS. USE OF OBSOLETE
INFORMATION MAY CREATE AN UNSAFE CONDITION THAT MAY
RESULT IN DEATH, SERIOUS BODILY INJURY,AND/OR SUBSTANTIAL
PROPERTY DAMAGE. REFER TO THE APPLICABLE SERVICE
DOCUMENT INDEX FOR THE MOST RECENT REVISION LEVEL OF
THE SERVICE DOCUMENT.
CAUTION 2: THE INFORMATION FOR THE DOCUMENTS LISTED INDICATES THE
REVISION LEVEL AND DATE AT THE TIME THAT THE DOCUMENT
WAS INITIALLY INCORPORATED INTO THIS MANUAL. INFORMATION
CONTAINED IN A SERVICE DOCUMENT MAY BE SIGNIFICANTLY
CHANGED FROM EARLIER REVISIONS. REFER TO THE APPLICABLE
SERVICE DOCUMENT INDEX FOR THE MOST RECENT REVISION
LEVEL OF THE SERVICE DOCUMENT.
Service Document
Number
Incorporation
Rev./Date
Service Bulletins:
SB 163 Rev. 2 Aug/17
SB 166 Rev. 2 Aug/17
SB 166A Rev. 2 Aug/17
SB 168 Rev. 2 Aug/17
HC-SB-61-225 Rev. 1 Apr/03
HC-SB-61-289 Rev. 2 Aug/17
HC-SB-61-309 Rev. 2 Aug/17
HC-SB-61-354 Rev. 2 Aug/17
Service Document
Number
Incorporation
Rev./Date
Service Letters:
HC-SL-61-250 Rev. 2 Aug/17
HC-SL-61-256 Rev. 2 Aug/17
HC-SL-61-348 Rev. 2 Aug/17
HC-SL-61-354 Rev. 2 Aug/17

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Service Document
Number
Incorporation
Rev./Date
Service Document
Number
Incorporation
Rev./Date

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AIRWORTHINESS LIMITATIONS 61-10-44
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AIRWORTHINESS LIMITATIONS
1. Airworthiness Limitations
A. Life Limits
(1) Certaincomponentparts,aswellastheentirepropeller,mayhavespeciclife
limits established by the FAA. Such limits require replacement of items after a
specicnumberofhoursofuse.
(2) For airworthiness limitations information, refer to Hartzell Propeller Inc. Owner's
Manual 154 (61-00-54).

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LIST OF EFFECTIVE PAGES
Chapter Page Rev. Level Date
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Cover/Inside Cover Cover/Inside Cover Rev. 5 Apr/23
Revision Highlights 1 thru 4 Rev. 5 Apr/23
Record of Revisions 1 and 2 Rev. 5 Apr/23
Record of Temporary Revisions 1 and 2 Rev. 5 Apr/23
Service Document List 1 and 2 Rev. 5 Apr/23
Airworthiness Limitations 1 and 2 Rev. 5 Apr/23
List of E󰀨ective Pages 1 and 2 Rev. 5 Apr/23
Table of Contents 1 and 2 Rev. 5 Apr/23
Introduction 1 thru 22 Rev. 5 Apr/23
Description and Operation 1 thru 6 Rev. 5 Apr/23
Testing and Fault Isolation 1-1 thru 1-10 Rev. 5 Apr/23
Automatic Test Requirements 2-1 and 2-2 Rev. 5 Apr/23
Disassembly 3-1 thru 3-14 Rev. 5 Apr/23
Cleaning 4-1 thru 4-4 Rev. 5 Apr/23
Check 5-1 thru 5-90 Rev. 5 Apr/23
Repair 6-1 thru 6-20 Rev. 5 Apr/23
Assembly 7-1 thru 7-66 Rev. 5 Apr/23
Fits and Clearances 8-1 thru 8-8 Rev. 5 Apr/23
Special Tools, Fixtures,
and Equipment 9-1 thru 9-4 Rev. 5 Apr/23
Illustrated Parts Lists 10-1 thru 10-16 Rev. 5 Apr/23
Illustrated Parts Lists 10A-1 and 10A-10 Rev. 5 Apr/23

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TABLE OF CONTENTS
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TABLE OF CONTENTS
REVISION HIGHLIGHTS .................................................................................................1
RECORD OF REVISIONS ...............................................................................................1
RECORD OF TEMPORARY REVISIONS........................................................................1
SERVICE DOCUMENT LIST............................................................................................1
AIRWORTHINESS LIMITATIONS ....................................................................................1
LIST OF EFFECTIVE PAGES ..........................................................................................1
TABLE OF CONTENTS....................................................................................................1
INTRODUCTION..............................................................................................................1
DESCRIPTION AND OPERATION...................................................................................1
TESTING AND FAULT ISOLATION...............................................................................1-1
AUTOMATIC TEST REQUIREMENTS..........................................................................2-1
DISASSEMBLY .............................................................................................................3-1
CLEANING ....................................................................................................................4-1
CHECK..........................................................................................................................5-1
REPAIR .........................................................................................................................6-1
ASSEMBLY ..................................................................................................................7-1
FITS AND CLEARANCES.............................................................................................8-1
SPECIAL TOOLS, FIXTURES, AND EQUIPMENT.......................................................9-1
ILLUSTRATED PARTS LIST .......................................................................................10-1

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