SECTION 1 -INTRODUCTION
1.1 General Information
WARNING:
IMPROPER OR UNAUTHORIZED APPLICATIONS OF THE INFORMATION
CONTAINED IN THE INSTRUCTION MAY RENDER THE AIRCRAFT
OR THE COMPONENT UNAIRWORTHY AND RESULT IN LOSSES,
DAMAGES, OR INJURY TO THE USER.
DO NOT USE OBSOLETE OR OUTDATED INFORMATION. PERFORM
ALL INSPECTIONS OR WORK IN ACCORDANCE WITH THE MOST
RECENT REVISION OF THE APPLICABLE AIRCRAFT/ENGINE SERVICE
OR MAINTENANCE MANUAL. INFORMATION CONTAINED IN THESE
INSTRUCTIONS 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.
The accuracy and applicability of this instruction has not been veried for any assembly, component or part
not manufactured by Hartzell Engine Technologies LLC (HET). Any use of the instruction for other than its
intended or implied purpose is prohibited. The use of the instruction for the purpose of performing any
installation, maintenance, replacement, adjustment, or inspection of any assembly, component or part not
manufactured by HET is not approved, endorsed, or sanctioned by HET.
This instruction has been approved by Hartzell Engine Technologies LLC as the proper methods and
procedures that FAA or other airworthiness authority Certicated Repair Stations and A/P Mechanics
should use in the inspection and maintenance of Hartzell Engine Technologies LLC regulators.
No liability will be assumed by Hartzell Engine Technologies LLC for actual, consequential, incidental or
other types of damages directly or indirectly resulting from the unauthorized use of this instruction for other
than its stated purposes.
The liability for use of the authorized data herein for the maintenance, or return to service is limited to
the specic terms and conditions stated under the applicable Limited Warranty in eect for each piece
part, component, assembly or whole unit sold by HET.
Because of the numerous modications, Supplemental Type Certicates (STC), Parts Manufacturing
Approvals (PMA), or Form 337 Field Approvals that may apply, it is the responsibility of the repairman,
mechanic or maintenance facility to determine the proper engine or aircraft application of this regulator
assembly. Please refer to the appropriate aircraft Type Certicate (TC), Supplemental Type Certicate
(STC), aircraft equipment list, maintenance manuals, and/or Log Book entries for determination.
When performing installation, maintenance, replacement, adjustment, or inspection of any HET assembly,
component or part, it is imperative that the latest revision of this instruction or other product support
document be referenced. Reference the HET website to be sure you have the latest revision before
performing any work. (http://www.hartzell.aero/maintenance-manuals/)
All reasonable attempts were made to make this instruction as complete and accurate as possible. If you
have any questions, comments, corrections or require clarication of any information contained herein,
please write to Hartzell Engine Technologies LLC, 2900 Selma Highway, Montgomery, Alabama, 36108
USA. TEL +1.334.386.5400, FAX +1.334.386.5410, or http://hartzell.aero/contact/.
R1224 Regulator
Installation Instruction
12-1001 24-30-01
Rev. M: 01 Dec. 2021 Page: 1-1
© 2021 - Hartzell Engine Technologies - All rights reserved
